What's The Lingo/Abbreviation?

ACG -- ACcu-Grade. Grading service. Controversial at present, because the assigned grades
seem to be inflated relative to standard services like PCGS and NGC.
AG (AG3) -- About Good. Grade.
ANA -- American Numismatic Association. Collector and dealer organization.
ANACS -- (originally) American Numismatic Association Certification Service. Grading
service. It has since been sold to a company independent of the ANA.
AU (AU50, AU53, AU55, AU58) -- About Uncirculated. Grade.
B# (B1-B10?) -- Browning number (1925). Die variety - Bust Quarters, 1796-1838.
B# (B1-B23?) Bolender number (1950, 1998). Die variety - Silver Dollars, 1794-1803.
BB# (BB1-BBn?) -- Bowers and Borckardt number (1993). Die variety - Silver Dollars,
1794-1804 and later.
BG# (BG101-BG1313) -- Breen and Gillio number (1983). Die variety - California private
gold, 1852-1882.
BIN -- Buy It Now. ebay (www.ebay.com) phrase.
BN -- Brown. Color grade for uncirculated copper coins (BN, RB, or RD).
BU (MS60?) -- Brilliant Uncirculated. Vague Grade.
BV -- Bullion Value. The value of the coin is closely related to its metallic content
(usually silver or gold).
C -- Charlotte (North Carolina). Mintmark, 1838-61, gold coins only.
C# (C1-C23?) -- Cohen number (1982). Die variety - Half Cents, 1793-1857.
CC -- Carson City (Nevada). Mintmark, 1870-93, gold and silver coins only.
CMM# (CMM1-CMM13?) -- Cohen, Munson, Munde number (1971). Die variety - Half Cents,
1793-1857.
CSDG -- California Small Denomination Gold.
CW -- Coin World. Publication.
D -- Dahlonega (Georgia). Mintmark, 1838-61, gold coins only.
D -- Denver (Colorado). Mintmark, 1906-.
DC (DCAM) -- Deep Cameo. High grade proof.
DDO -- Doubled Die Obverse. Type of die variety.
DDR -- Doubled Die Reverse. Type of die variety.
DMPL -- Deep Mirror Proof Like. Business strike, with deep mirrored planchet.
EAC -- Early American Coppers, Inc. Collector and dealer organization.
EF (EF40, EF45) -- Extremely Fine. Grade.
F (F12, F15) -- Fine. Grade.
FS# (FS1-FS?) -- Fivaz and Stanton number (19xx). Die variety - many series.
FS -- For Sale. Internet phrase.
G (G4, G6) -- Good. Grade.
GMM -- Gallery Mint Museum. A current producer of replicas of early US coins.
ICGS -- Independent Coin Grading Service. Grading service.
J# (J1-J1778?) -- Judd number (1959-77). Pattern or experimental coin.
JR# (JR1-JR13?) -- John Reich number (Davis, et al, 1984). Die variety - Bust Dimes,
1794-1837.
KM# (KM1-KM?) -- Krause and Mishler number. From Standard Catalog of World Coins. Type of
world coin. Includes California, Mormon, Colorado, Hawaii.
MS (MS60-MS70) -- Mint State. (Uncirculated, business strike). Grade.
N# (N1-N17?) -- Newcomb number (1944). Die variety - Large Cents, 1816-1868.
N# (N1-N105?) -- Newman number (1952). Die variety - Fugio Cents, 1787.
NARU -- Not A Registered User (implies account terminated due to violation of rules).
EBay(www.ebay.com) phrase.
NC -- Not Collectable. A unique or nearly unique coin. Usually one of Sheldon's die
varieties of Large Cents. At the time of Sheldon's "Penny Whimsey" (1958),
for a coin to be NC, there had to be less than 3 specimens known.
NGC -- Numismatic Guarantee Corporation. Grading service.
NLG -- Numismatic Literary Guild. A prestigious organization of writers of numismatically
related articles, books, etc.
NN -- Numismatic News. Publication.
NTC -- Numistrust Corporation. Grading service.
O# (O101-O128?) -- Overton number (1970). Die variety - Bust Half Dollars, 1794-1836.
OMM -- Over MintMark. Two different mintmarks involved. (versus RPM, which is the same
mintmark punched more than once). Type of die variety.
OT -- Off Topic. Internet phrase.
P -- Philadelphia (Pennsylvania). Mintmark, 1942-45 (5c only), 1979- (all but 1c).
Sometimes denotes absence of mintmark.
PCGS -- Professional Coin Grading Service. Grading service.
PCI -- Photo-certified Coin Institute. Grading service.
PF (PF60-PF70) -- Proof. Type of coin production and/or Grade. Contrasts with business
strike.
PL -- Proof Like. Business strike, with mirrored planchet.
PNG -- Professional Numismatists Guild. Dealer organization.
PQ -- Premium Quality. Sometimes part of the sealed slab grade, such as a MS64 PQ
(not quite good enough for MS65). Often it is just a hype adjective like "Choice" or
"Select".
PR (PR60-PR70) -- Proof. Type of coin production and/or Grade. Contrasts with business
strike.
PVC -- Poly Vinyl Chloride. An ingredient of soft plastic "flip" coin holders which will
damage coins over time.
R# (R1-R8)
Rarity scale. R1 most common; R8 least common. The often used Sheldon scale is:
R8 = 1-3 known (estimated), "Unique or Nearly Unique"
R7 = 4-12 known, "Extremely Rare"
R6 = 13-30 known, "Very Rare"
R5 = 31-75 known, "Rare"
R4 = 76-200 known, "Very Scarce"
R3 = 201-500 known, "Scarce"
R2 = 501-1250 known, "Uncommon"
R1 = over 1251 known, "Common"
RB -- Red-Brown. Color grade for uncirculated copper coins (BN, RB, or RD).
RD -- Red. Color grade for uncirculated copper coins (BN, RB, or RD).
RIC -- Roman Imperial Coinage.
ROFL -- Rolling On the Floor Laughing. Internet phrase.
RPC -- Roman Provincial Coinage.
RPD -- RePunched Date. Type of die variety.
RPM -- RePunched Mintmark. Type of die variety.
RSC -- Roman Silver Coinage.
S -- San Francisco (California). Mintmark, 1854-1955, 1968-.
S# (S1-S295?) -- Sheldon number (1949). Die variety - Large Cents, 1793-1814.
S# (S1-S9?) -- Snow number (1992). Die variety - Flying Eagle and Indian Head cents,
1856-1909.
SEGS -- Sovereign Entities Grading Service. Grading service.
SP -- Specimen. Better than business strike, but not quite a proof.
TTT -- used on this forum to bump up threads to the top of the list
UC (UCAM) -- Ultra Cameo. High grade proof.
UNC (Unc., MS60?) -- Uncirculated. Grade.
V# (V1-V10?) -- Valentine number (1975). Die variety - Half Dimes, 1794-1873.
VAM# (VAM1-VAM230?) -- Van Allen and Mallis number (1976). Die variety - Morgan dollars,
1878-1921.
VG (VG8, VG10) -- Very Good. Grade.
VF (VF20, VF30, perhaps VF35) -- Very Fine. Grade.
W -- West Point (New York). Mintmark, 1984-.
WTB -- Wanted To Buy. Internet phrase.
XF (XF40, XF45) -- eXtremely Fine. Grade.

Interesting, there are two definitions listed for "FS" and neither is Full Steps.

When discussing sales, people often abbreviate auction houses - GC = Great Collections, HA = Heritage Auctions, SB = Stacks Bowers, DL = David Lawrence, etc. The abbreviations are also used on the TPG sites in the price guide auction results sections.

@John1
Lol was throwing it out there as an example only #128540;

Slider23's list is quite comprehensive.

A few that might be added:

( ebay Specific)
INR - Item Not Received, filed by buyers when they state they did not receive the item they purchased
SNAD - Significantly Not As Described, filed by buyers when they state the item was received but was either not the same item that was in the listing or was in a condition significantly different than what was lin the listing.
BBL - Blocked Bidder List

(ancient coins, a couple of the more common)
Ant - Antoninianus, plural antoniniani
d - Denarius, plural denarii
f - Follis, plural folles
Off - Officina, plural officinae (Roman mint/mint mark)
RIC - Roman Imperial Coinage
RPC - Roman Provincial Coinage
RRC - Roman Republican Coinage
RY - Regnal Year (a dating system based on how long a ruler has been in power, e.g. 1st year of accession would be RY 1 starting from the date of accession)
BMC - British Museum Catalogues
S - Sear or Seaby
Tet - Tetartemorion (1/4 obol), Greek coinage
Tet - Tetrassarion (4 assaria), Roman provincial coinage

(world coins)
BF - Bankfrisch (German coin grading, Uncirculated)
BHM - British Historical Medals (Brown)
Cal - Calico number (Spanish silver coinage)
C or Cor. - Corona (Austrian coinage)
D - Penny (British traditional, as in 3d for "threepence")
Dav - Davenport number (Thalers)
D&H - Dalton & Hamer, British trade tokens (Conder tokens)
DOA - German East Africa (Deutsch Ostafrika)
DM - Deutschmark (Pre-Euro German coinage)
Dy - Duplessy number (French coinage) "Les monnaies françaises royales de Hugues Capet à Louis XVI"
Ea - Erstabschlag (German coin grading, Proof)
EM - Ekaterinburg Mint, Russian Imperial coinage
FDC - Fleur de coin (French and other world coin grading)
Fl. - Florin (European and British coinage), in the British sense a coin of two shillings or 2/-
FM - Franklin Mint
Gad - Gadoury number (French coinage) "Monnaies françaises"
Gr. - Groschen (German/Austrian coinage)
Jg. - Jäger number (German coinage)
H - Dr. Haxby (1859 Canadian large cents)
ICCS - International Coin Certification Service (mostly Canada grading)
KN - King's Norton (British coinage)
Kr - Kreuzer (German/Austrian coinage), pre-reform KreuTzer
Kr - Krone, Kronur, Kronor, etc.
L - Pound (British traditional)
MdP - Monnaie de Paris, French mint
Mg or Mgr. - Mariengroschen (German States coinage)
Mk - Mark (German coinage)
NSF - No shoulder fold (Canadian coinage of Elizabeth II)
P - Pence (British coinage), e.g. 10p = ten pence, originally NP (New Pence) after decimalization in 1971
Pf. - Pfennig (plural Pfennige), pre-reform PfenniNg/PfenniNge)
PM - Papiermark (German currency)
R - Real/Reales (1/2R, R, 2R, 4R, 8R)
RCM - Royal Canadian Mint
RD - Riksdaler / Rigsdaler / Richtsdaalder / etc.
RM - Reichsmark or Rentenmark (German coins and currency)
RM - Royal Mint (UK)
RSA or ZAR - Republic of South Africa
S - Shilling (British traditional, eg 2s3d or 2/3 = Two shillings threepence)
SCGC - Standard Catalog of German Coins 1501-date
Sch. - Schilling (Austrian coinage)
SF - Shoulder fold (Canadian coinage of Elizabeth II)
Slg - German abbreviation for "Sammlung", meaning "collection", e.g. "Slg. Merseburg 402"
Sp. - Spink's Catalogues of British Coins, e.g. Sp. 3862
SS - Sehr schon (German coin grading, Very Fine)
St. - Stempelglanz (German coin grading, Brilliant Uncirculated)
Th - Thaler (German/Austrian coinage)
TM - Tower Mint (British coinage)
Tn - Token (used in KM listings, q.v.)
Vz. - Vorzuglich (German coin grading, Extremely Fine)
WAGO - WAG Online, German/Austrian auction house and dealer

(general)
ANS - American Numismatic Society
B&D - Brown & Dunn, an early coin grading guide
BG - Fractional California Gold catalogue
CV - Current value, cash value, etc
CWT - Civil War Token
DBL - Draped bust left (Connecticut, Vermont, etc)
DBR - Draped bust right (Connecticut, Vermont, etc)
EDS - Early die state
EPN - Eric P. Newman, numismatist, author and collector
Ex - Exergue (the area on the bottom of the coin where the date is, e.g. usually below a line); in ex. = in exergue
Ex - Also means "from" as in ex: Merton Hoard, used to describe a pedigree, provenance, or collection of origin for a given item
FDI or FDoI - First day of issue
FDS or FS - First Strike, as seen on TPG holders
FMV = Fair market value
FND - FInd.er's Report (Flying eagle and Indian Head cent die varieties -- seen on some older references and old ANACS holders)
FRV = Full retail value
HTT = Hard Times Token
LDS - Late die state
M - Manley die state ( Half Cents) e.g. M1.0, M2.0
M - Miller variety (Connecticut coppers), e.g. M 32.5-aa - the FNDE variety of the 1787 Draped Bust Left
MDS - Middle or median die state
NCLT - Non-Circulating Legal Tender
QDB - Q. David Bowers, numismatist and author
Rx = Reverse (coin side)
RP - Reverse proof
SCD - So-Called Dollar
TDS - Terminal die state
URS - Universal Rarity Scale

I can think of a few:

The Wiki is always a good source try: https://en.wikipedia.org/wiki/Gloss..._numismatics

An older yet still good book can be found for $5 to 10 range used is "The Coin Dictionary and Guide: (1960) by C. C Chamberlain and Fred Reinfeld look at all the usual spots Amazon, ebay, abebooks, etc.

This one more English/Irish centered but has US coin terms in it: "Dictionary of English numismatic terms" by Maneville
https://www.worldcat.org/title/908410247

Here is a neat database that helps Translate obscure numismatic terms into various languages (really cool):
http://parthia.org/Translations/Sho...nsTable.aspx

Here is one list dedicated to error and variety terms from the error club CONECA
https://conecaonline.org/glossary-o...riety-terms/

Another older but relevant list of Numismatic Terms in various languages complete book in links (searchable):
"DICTIONARY OF NUMISMATIC NAMES" By Albert R. Frey
https://babel.hathitrust.org/cgi/pt...ew=1up&seq=5

There are several various English<>German, English<>Spanish and other language books around that deal mainly with coins but those are a lot more specialized I think that what you want.

You are all awesome