Abbreviations

A - (1) About (general, condition)

A - (2) Almost (general, condition)

A0 - 841 x 1189 mm / 33.1 x 46.8 in (A series paper size)

A1 - (1) 594 x 841 mm / 23.4 x 33.1 in (A series paper size)

A1 - (2) [perfect] (condition, as good as can be for its type/age)

A2 - 420 x 594 mm / 16.5 x 23.4 in (A series paper size)

A3 - (1) 297 x 420 mm / 11.7 x 16.5 in (A series paper size)

A3 - (2) Alpha Trion (Transformers character)

A4 - 210 x 297 mm / 8.3 x 11.7 in (A series paper size)

A5 - 148 x 210 mm / 5.8 x 8.3 in (A series paper size)

A6 - 105 x 148 mm / 4.1 x 5.8 in (A series paper size)

A7 - 74 x 105 mm / 2.9 x 4.1 in (A series paper size)

A8 - 52 x 74 mm / 2.0 x 2.9 in (A series paper size)

A9 - 37 x 52 mm / 1.5 x 2.0 in (A series paper size)

A10 - 26 x 37 mm / 1.0 x 1.5 in (A series paper size)

A+ - [very good] (condition, above average for its type/age)

AA - (1) African-American (action figure skin-type, as opposed to and see also; CA)

AA - (2) Animal Artistry (model horse collecting/collectors)

AA - (3) Anti-Aircraft (war gaming - from the military)

AA - (4) Artificer Armour (Warhammer Space-Marines)

A&A - Armorum and Aquila [Miniatures] (bastardised Latin; 'Arms and Flags', figure manufacturer)

AAA - Anti-Aircraft Artillery (war gaming - from the military)

AAP - Arms [and] Armour Press (publisher; A&AP on spines)

A&AP - Arms and Armour Press (publisher, tends to be written; AAP)

AAR - (1) After Action Report (war gaming)

AAR - (2) Association [of] American Railroads

AAT - Armored Assault Tank (Star Wars vehicle)

AB - (1) Action Boy (Captain Action character)

AB - (2) Army Book (war gaming)

AB - (3) Army Builder (common figures)

AB - (4) Aurora Borealis (jewellery, auction descriptions)

ABC - (1) Aluminium, Brass and Chrome [or Composite/ion] (radio-controlled engine type, see also ABL and ABN)

ABC - (2) Asian Best Collection (die-casting toy maker)

AB Eye - Air-brushed Eyes (My Little Pony)

ABG - Alt, Beck [und] Gottschalck (porcelain and composition toy maker)

ABiA - Aura Battler in Action (toy line)

ABJD - Asian Ball-Jointed Doll

ABL - Advanced Bi-metallic Liner (radio-controlled engine type, form of ABN, see also; ABC)

ABM - Automatic Bottle [making/manufacturing/moulding] Machine (bottles, glassware, jars)

ABN - Aluminium, Brass [and] Nickel (radio-controlled engine type, see also; ABC and ABL)

ABNC - American Bank Note Company (numismatics, stamps)

ABS - Acrylonitrile Butadiene Styrene (plastic polymer)

ABY - After [the] Battle [of] Yavin (Star Wars, see also; BBY and BY)

AC - (1) Alternating Current (model railways, radio-control, slot racing, electrics, see also; AC/DC and DC)

AC - (2) Assault Cannon (gaming)

AC - (3) Armoured Company (gaming)

AC - (4) Aspiring Champion (Warhammer Chaos)

AC - (5) Autocannon (gaming)

ACC - Accessory (also; Accy.)

Acc. - Accumulation (postage stamps)

Access. - Accessories (also; Accs.)

Accs. - Accessories (also; Access.)

Accy. - Accessory (also; ACC)

AC/DC - Alternating Current / Direct Current (model railways, radio-control, slot racing, electrics, see also; AC and DC)

Acédo - ACEtate DOmage (plastics subsidiary of figure maker Domage et Cie (DC), see also; Aludo)

ACEO - Art Cards, Editions [and] Originals (miniature artworks on 3.5 inch by 2.5 inch - playing card sized - cards, see also; ATC, OSWOA and SFA)

A-Cert - A [level] Certificate (radio-control, BMFA certification, entry level, see also B-Cert and C-Cert)

ACL - Applied Colour Label (bottles, glassware, jars)

A Class. - Advanced Classification (slot racing, see also; B Class.)

ACT - Anti-Crash Technology (radio-control)

ACTA - A Call to Arms (figure manufacturer)

ACTS - Automated Card Tracking System (gaming system)

ACW - American Civil War

AD - Anthony Daniels (Star Wars actor who plays C-3P0)

Ad. - Advertisement

ADB - Amarillo Design Bureau (board games manufacturer)

Addr. - (1) Address (General)

Addr. - (2) Addressed (Philately)

ADDY - Address (specifically: eMail address, chat rooms, forums, message boards, US)

ADG - Australian Design Group (games publisher)

Adm. - [Postal] Admininstration (Philately)

Admin. - [Postal] Admininstration (Philately)

Adv. - Adventure (subject matter, books or movies)

ADV - Advertisement / Advertise

AE - American Eagle (coins)

AEC - Armada, Energon [and] Cybertron (Transformers characters)

AECP - Anniversary Edition Collectors Pose (My Little Pony 25th anniversary re-issues)

AF - (1) Action Figures

AF - (2) Armoured Fist (Warhammer Imperial Guard)

a.f. - Aquaforti (Latin: nitric acid, used to etch metal plates, denotes a print is an etching, see also; aq.)

AFA - Action Figure Authority (independent grading (for a price) company, self-appointed!)

AFA Cirt. - Action Figure Authority Certificate [Present]

AFAIK - As Far as I Know (Internet, chat rooms, forums, message boards, online)

AFCEF - Association des Figurinistes et Collectionneurs de Figurines del l'Est de la France (French Association of Flat Figurine Collectors)

AFD - Action Figure Digest (publication)

AFFA - Austin Friends [of] Folk Art (arts and craft organisation, Texas, USA)

AFK - Away from Keyboard (chatrooms, forums, message boards)

AFOL - Adult Fan of Lego (see also; ALE and ALH)

AFR - Adjustable Function Rate (radio-control, see also; ATV)

Aft. - After (following the form, style or pattern of...)

AFV/s - Armoured Fighting Vehicle/s

Afx. - Airfix (model kit and toy soldier manufacturer)

AG - (1) About Good (condition, coins)

AG - (2) Adrenal Glands (Warhammer Tyranids)

Ag. - Silver (element, coins)

Agcy. - Agency

AGW - Actual Gold Weight (antiques, coins, jewellery, auction listings)

AGYL - Adults get Younger Later (see also; KGOY)

AH - (1) All Human (fan fiction where super heroes are portrayed as humans)

AH - (2) Avalon Hill [Gaming Co.] (games manufacturer, see also; TAHGC)

AHI - Azrak Hamway International (general toy importer and manufacturer)

AHM - (1) All Hail Megatron (Transformers story line)

AHM - (2) Associated Hobby Manufacturers (general toy and hobby manufacturer/importer, continued as; IHC)

AH / SI - Avalon Hill - Sports Illustrated (sports games publishing arm of AH)

AI - Artificial Intelligence (gaming, general and licensed movie title)

AIC - Adult [fans of Lego] Inner Circle (company testing / feedback / focus-group)

AILE / Aile. - Ailerons (model aircraft)

AiP / AIP -  Armies in Plastic (plastic figure manufacturer)

AIR - [by or of...] Air Mail (postage stamps)

AITH - Am I The Asshole? (Eng.; Arsehole, Internet, chat rooms, forums, message boards, online, specifically; a sub-Reddit group/page 'AmItheAsshole' on the Reddit platform, see also; YTA)

AJHS - American Jewish Historical Society

AKA - Also Known As (Internet, chat rooms, forums, message boards, online)

AL - (1) Alpha Legion (Warhammer Chaos)

AL - (2) Auction Listing

ALE - Adult Lego Hobbyist (see also; AFOL and ALH)

ALH - Adult Fan of Lego (see also; AFOL and ALE)

ALO - Alexander Olajos (toy maker)

Aludo - ALUminium DOmage (aluminium subsidiary of French figure maker Domage et Cie (DC), see also; Acédo)

Alum. - Aluminium (metal)

Alum/W - Aluminium Wheels (model cars, vehicles)

AM - (1) Academy-Minicraft (merged kit-manufacturers)

AM - (2) Action Man (Hasbro's GI Joe licence produced for the UK by Palitoy)

AM - (3) Action Master (Transformers)

AM - (4) Almost Mint (condition)

AM - (5) Amplitude Modulation (radio-control)

AM - (6) Arms Micron (Transformers)

AM - (7) Automorph (Transformers character)
AMA - (1) Ask Me Anything (chat rooms, forums, message boards)

AMA - (2) [The] Academy [of] Model Aeronautics (official national body for model aviation in the US)

AMEX / Amex. - American Express (payment method)

Andy. - Andalusian [Horse] (model animal collectors)

Ani. - (1) Animal/s

Ani. - (2) Animated / Animation (cartoons, characters, movies; as opposed to live action; LAM)

Amex. - American Express (payment method, also; AMX

AML  -  Associazione Modellistica Legione (1:6th scale figure manufacturer)

AMT - All Moving Tail (radio-controlled aircraft)

AMV/'s - Anime Music Video/s

AMYA - American Model Yachting Association (hobby body)

AMX - American Express (payment method, also; Amex.)

AN - Author's Note (publishing, fan fiction)

ANA - American Numismatic Association (see also; ANS)

ANACS - American Numismatic Association Certification Service

ANH - A New Hope (Star Wars licensed characters; Episode IV originally titled 'Star Wars'; SW)

Anil. - Anline (philately/printing; inks)

ANN - Axiom Nexus News (Transformers)

Anniv. - Anniversary

ANS - American Numismatic Society (see also; ANA)

Anth. - Anthology (collection, usually of short stories or poetry; books, magazines)

AO / A/O - All Original (condition)

AOA - Angle of Attack (radio-controlled aircraft)

AoBR - Assault on Black Reach (gaming game / scenario)

AOC - Agents of Chaos (Star Wars novel duology)

AOE - Age of Extinction (Transformers)

AoF - Acts of Faith (Warhammer Inquisition)

AOI - Angle of Incidence (radio-controlled aircraft)

AOL - America Online (all but defunct Internet service provider (ISP) and web-space)

AOME - Armies of Middle Earth (Tolkein's world toy-line from Play Along Toys)

AOP - All-over Pattern

AOTC - Attack of the Clones (Star Wars, Episode II)

AP - (1) Analysis Paralysis (gaming)

AP - (2) Artists Proof (books, posters, prints, see also; EA, HC, PP and TP)

Ap. - Apple (colour, stamps)

APBA - American Power Boat Association (hobby body)

APC - Armoured Personnel Carrier (war gaming - from the military)

APE - Advanced Primate Entertainment (manufacturer)

APH - American Prototype Hobbies (white metal manufacturer)

API (1) - American Petroleum Institute (organisation)

API (2) - Application Programming Interface (computing)

APM - American Precision Models (model manufacturer)

APO - Army Post Office (Philately, US equivalent of BFPO)

App. - (1) Application (computing)

App. - (2) Appaloosa [Horse] (model animal collectors, also; Appy.)

Approx. - Approximately

Appy. - Appaloosa [Horse] (model animal collectors, also; App.)

Aprx. - Approximately

APS - American Philatelic Society

Apx. - Approximately

aq. - Aquaforti (Latin: nitric acid, used to etch metal plates, denotes a print is an etching, see also; a.f.)

Aqua. - Aquamarine (colour, stamps)

AR - (1) Alternate Reality (Star Wars, sci-fi, gaming, fan fiction &etc...see also; AT & AU)

AR - (2) Artist Resin (Breyer horses)

ARC - (1) Advance/d Reader/'s Copy (books, magazines)

ARC - (2) Almost Ready [to] Crash (radio-control, wobbling...)

ARCO - A Rosenberg Company (toy importer purchaed by Mattel to handle their Hong Kong arm)

Arco's. - Arco-flagellants (Warhammer Inquisition)

ARF - Almost Ready [to] Fly (radio-control, toy, usually powered, that requires minimal construction or additional components, see also; ARR, ARTR, BNF, PNP, RTF and RTR)

ARG - Alternate Reality Game (gaming)

Argie / Argy - Argentinean (origin)

Arm. - Armada (Transformers toy line)

ARR - Almost Ready [to] Run (radio-control, slot racing, toy, usually powered, that requires minimal construction or additional components, see also; ARF, ARTR, BNF, PNP, RTF and RTR)

ARSE - Accurately Realized Scale [railway] Engines (Lego)

ARTR - Almost Ready to Run (radio-control, toy, usually powered, that requires minimal construction or additional components, see also; ARF, ARR, BNF, PNP, RTF and RTR)

ASTRA - American Specialty Toy Retailing Association

AS - Anakin Solo (Star Wars character)

AS - (1) Armour Save (gaming)

AS - (2) Assault Squad (gaming)

ASA - (1) America Society [of] Appraisers

ASA - (2) As Soon As (chat rooms, forums, message boards)

ASAFP - As Soon as Fucking Possible (derogatory, Internet, chat rooms, forums, message boards, on-line)

ASAP - As Soon as Possible (chat rooms, forums, message boards)

ASB - (1) Ak-Sar-Ben [Hobby Company] (US Model railroad manufacturer)

ASB - (2) American Saddle-bred [Horse] (Breyer horses, model animal collectors)

ASC - Aoshin Shoten Company [Ltd.] (Japanese tin-plate and toy manufacturer)

ASDA - American Stamp Dealers Association

ASE - American Silver Eagle (dollar coin, sometimes just; SE)

ASH - Australian Stock Horse [Horse] (model animal collectors)

ASHF - Action Stock Horse Foal (Breyer horses)

ASIN - Amazon Standard Identification Number (Amazon.com's inventory/stock control system)

'As is' - [Item sold] as [it] is [seen] (auctions, signifies no returns, buyer beware!)

ASL - Advanced Squad Leader (board game, see also SL)

ASLSK - Advanced Squad Leader Starter Kit (board game)

Asp. - Aspirant / Aspiring [champion] (Warhammer Chaos)

Assoc. - Association

ASSR - Autonomous Soviet Socialist Republic

ASST - Assortment (stock code prefix/suffix)

AST - Assortment (stock code prefix/suffix)

ASTM - American Society [for] Testing [and] Materials

ASTRAC - Automatic Simultaneous Train Control (model railways, US)

ASW - Actual Silver Weight (antiques, coins, jewellery, auction listings)

AT - (1) Adventure Team (GI Joe)

AT - (2) Almost Trash (condition)

AT - (3) Alpha Trion (Transformers character)

AT - (4) Alternate Timeline (Star Wars, sci-fi, gaming, fan fiction &etc...See also; AR & AU)

AT - (5) Anti-Tank (Warhammer, war gaming, from the military)

AT - (6) Astrotrain  (Transformers character)

AT-AT - All Terrain Armoured Transport (Star Wars vehicle)

ATC - (1) Artist Trading Card (miniature artworks on 3.5 inch by 2.5 inch - playing card sized - cards, see also; ACEO, OSWOA and SFA)

ATC - (2) Asahi Toy Company (Japanese manufacturer)

ATG - Alt.Toys.Gi-Joe (on-line newsgroup)

ATHQ - (1) Adventure Team Headquarters (GI Joe line)

ATHQ - (2) Adventure Team Headquarters (GI Joe mailing list)

ATL - (1) Adjustable Trim Low-side [only] (radio-control)

ATL / Atl. - (2) Atlantic (Italian general toy and figure manufacturer)

ATM - At the Moment (Internet, chat rooms, forums, message boards)

ATS - (1) American Toy Soldiers (US plastic figure manufacturer)

ATS - (2) Auction Technology Specialist (US professional designation)

ATS - (3) Automatic Tail System (radio-control)

ATSKNF - And They Shall Know No Fear (Warhammer Space-Marines)

AT-ST - All Terrain Scout Transport (Star Wars vehicle)

AT-TE - All Terrain Tactical Enforcer (Star Wars vehicle)

ATTIC - Advanced Teaching Technology In Classrooms (an offshoot produces 1:48th scale resin aircraft models)

ATV - (1) Adjustable Travel Volume (radio-controlled servo feature, see also AFR, ATV/EPA and EPA)

ATV - (2) All Terrain Vehicle

ATV - (3) Anglia Television (major UK licenser of children's characters in the 1960/70's)

ATV/EPA - Adjustable Travel Volume [and/or] End Point Adjustment (radio-controlled servo feature, see also ATV and EPA)

AU - (1) About / Almost Uncirculated (coin or note, as; Near Mint, also; A Unc.)

AU - (2) Alternate Universe (Star Wars, sci-fi, gaming, fan fiction &etc...See also; AR & AT)

AUD - Australian Dollars (currency, numismatics)

A/Unc. - About / Almost Uncirculated (coin or note, as; Near Mint, also; AU)

Aussie - Australian (origin)

Auto. - (1) Autographed (condition)

Auto. - (2) Autorotation (radio-controlled helicopters, powerless decent and landing)

Auto. - (3) Automatic (general)

AV - Armour Value/s (gaming)

Av. - Average (condition, stamps; less than fine)

AVCS - Angular Vector Control System/Servo (radio-controlled helicopters, also; HH)

Ave. - Average (condition, stamps; less than fine)
AVIDS / Avids - Approaching [adulthood], Video [-driven], Influence [aware] Digital [-native], (young people in the 16-20 age bracket, term coined late 2018)

AVP - Ask Vector Prime (Transformers)

AVP- Avalanche Press (games manufacturer)

AWD - All-wheel/ed Drive / All Wheels Driven

Az. - Azure (colour, stamps)