Numismatic Terms and Coin Collecting Glossary

Whether you are new to coin collecting or have been involved with coins for years, numismatic terminology can be confusing. Coin dealers, grading services, auction listings, and collectors often use specialized words to describe condition, rarity, minting methods, errors, varieties, bullion value, and collector demand.

This glossary explains common coin collecting and numismatic terms in plain English. It includes grading terms, mint marks, proof coins, bullion-related language, paper money references, mint errors, coin finishes, and collector abbreviations used by both beginners and experienced collectors.

Understanding these terms can help you read coin descriptions more confidently, ask better questions, and better understand how coins are evaluated. If you have coins, paper money, bullion, or an inherited collection and are unsure what you have, Oakton Coins & Collectibles offers coin buying services, help identifying inherited coins, and U.S. paper currency evaluations in the Chicago area.

Below is a glossary of important numismatic terms commonly used in the coin collecting world.

  • 5FS: shorthand for Five Full Steps designation in Jefferson Nickels

  • 6FS: shorthand for Six Full Steps designation in Jefferson Nickels

  • Adjectival Grade: a descriptive term like “Good” or “Uncirculated” indicating coin condition, with numeric values introduced by Dr. William Sheldon in the late 1940s

  • Adjustment Mark: visible file lines on some pre-19th century gold and silver coins from weight-adjustment filing at the mint

  • Alloy: a blend of two or more metals

  • About Good (AG): grading level equivalent to 3 on the Sheldon Scale

  • About Uncirculated (AU): a condition descriptor equivalent to grades 50–58

  • ANA: American Numismatic Association, a national group for coin enthusiasts

  • ANS: American Numismatic Society, a coin study and collecting group founded in 1858

  • Antiqued: chemically altered coin finish to give a uniform appearance and protect against unwanted toning

  • Assay: test process to determine metal content in ore

  • Attribution: identifying a coin’s variety using standard references

  • Authentication: confirming a coin’s authenticity

  • Base Metal: non-precious metal like copper, zinc, or nickel

  • Blank: an unstamped coin disc, also called a planchet

  • BN: short for Brown, referring to copper coin coloration; see also RB and RD

  • Bourse: term for the coin show sales floor

  • Brass: copper and zinc metal blend

  • Brilliant Uncirculated: a coin grade defined as MS 60 or higher by NGC

  • Bronze: alloy of copper and tin

  • Bullion: refined precious metal in bar, round, or coin form

  • CA: abbreviation for Cameo effect designation

  • Cartwheel: old nickname for American silver dollars

  • Cartwheel Luster: spinning light effect seen when rotating a coin, common in Morgan dollars

  • Certification: process where a coin is graded, authenticated, and sealed in a holder

  • Choice Uncirculated: coin grade at MS 63 or above, per NGC

  • Clad: coin made from layered metals

  • Collar: device shaping a coin’s edge during minting

  • Commemorative: limited-issue coin honoring events, people, or places

  • Condition Census: list of the top five or six finest-known examples of a specific coin

  • Contact Marks: small dings caused by coin-to-coin contact

  • Contemporary Counterfeit: fake coin made during the period of genuine issue

  • Coronet: small crown, often seen on Liberty-themed US coin designs

  • Counterfeit: imitation coin made to deceive, either as money or collector item

  • Cud: raised unstruck area from a die break where metal fills in the gap

  • Currency: money in circulation; in numismatics, refers to non-proof issues

  • Denomination: a coin’s face value, such as 1¢ or 10¢

  • Denticles: tooth-like edge design elements on vintage US coins

  • Device: raised feature on a coin such as lettering or portraits

  • Die: steel cylinder used to stamp a coin’s design, with two required per coin

  • Die Break: gap left by a broken die piece, creating a cud when struck

  • Die Clash: mark on a coin from dies striking each other without a blank in between

  • Double Eagle: $20 US gold coin minted from 1850–1933

  • DPL: abbreviation for Deep Prooflike surface designation

  • Eagle: $10 US gold coin minted from 1795–1933

  • Edge: the third side of a coin, either plain, reeded, lettered, or with stars

  • Encapsulated Coin: coin enclosed in a plastic holder for protection and grading

  • Enhanced Finish: finish showing different levels of mirror and frost effects, like on certain Silver Eagles

  • Enhanced Reverse Proof: reverse proof coin featuring enhanced mirror and frost details

  • Extremely Fine (XF): also “Extra Fine,” a grade of 40 or 45 on the Sheldon Scale

  • Fair (FR): grade equivalent to 2 on the Sheldon Scale

  • FB: abbreviation for Full Split Bands designation on Mercury dimes

  • FBL: abbreviation for Full Bell Lines designation on Franklin halves

  • FH: abbreviation for Full Head designation on Standing Liberty quarters

  • Field: flat coin surface between raised elements

  • Fine (F): grading term equal to 12 or 15

  • Fineness: proportion of precious metal in a coin

  • Flip: clear plastic sleeve for storing coins

  • Frosted: textured, non-glossy coin surface appearance

  • FT: abbreviation for Full Torch designation on Roosevelt dimes

  • Gem Uncirculated: NGC-defined grade of MS 65 or higher

  • Good (G): coin grade of 4 or 6 on the Sheldon scale

  • Grade: numerical rating of a coin’s condition from 1–70

  • GSA: General Services Administration, known for Morgan and Peace dollar sales

  • Hairlines: fine scratches that can lower a coin’s grade

  • Half Cent: US copper coin minted from 1793–1857

  • Half Dime: US silver five-cent coin issued 1794–1873

  • Half Eagle: US $5 gold coin issued 1795–1929

  • Hoard: large collection or stash of coins, often similar types

  • Hub: steel rod used to create coin dies

  • Intrinsic Value: metal content value, excluding face or collector worth

  • Legal Tender: government-approved coin for debt payments

  • Legend: wording on a coin, such as “LIBERTY”

  • Lettered Edge: coin edge with engraved or raised writing

  • Luster: light reflection pattern from a coin’s surface

  • Matte: deliberately dull coin finish

  • Minor Coin: small-denomination base metal coin like a penny or nickel

  • Mint: facility where coins are produced

  • Mint Error: manufacturing mistake resulting in an unusual coin

  • Mintmark: letter(s) showing a coin’s mint location

  • Mint State (MS): unworn, uncirculated coin condition

  • Mirror: smooth, highly reflective coin surface, usually on proofs

  • MS: Mint State abbreviation used with numerical grade

  • Numismatics: study and collection of coins

  • Numismatist: person engaged in numismatics

  • Obverse: front (heads) side of a coin

  • Overdate: coin with one year stamped over another

  • Pattern: prototype coin testing a new design or metal

  • Pedigree: record of a coin’s previous owners

  • PF: abbreviation for Proof grade

  • Plus (+): designation for coins nearly reaching the next grade level

  • PL: short for Prooflike

  • Plain Edge: smooth-edged coin with no lettering or reeding

  • Planchet: metal disc ready for striking into a coin

  • Poor (PO): grade level 1 on the Sheldon scale

  • Press: machine that strikes coins using dies

  • Proof (PF): specially made collector coin struck from prepared dies

  • Prooflike: coin resembling a proof with mirrored surfaces

  • Quarter Eagle: US $2.50 gold coin issued 1796–1929

  • R1, R2, R3, etc.: rarity scale from common (R1) to unique (R8)

  • RB: short for Red Brown copper coin color

  • RD: short for Red copper coin color

  • Red Book: nickname for “A Guide Book of United States Coins”

  • Redfield Hoard: famous stash of about 400,000 silver dollars

  • Reeded Edge: edge with raised grooves or lines

  • Releases Designation: label showing coin was certified within a specific release window

  • Relief: raised coin design elements

  • Restrike: coin made later using original dies

  • Reverse: back (tails) side of a coin

  • Reverse Proof: coin with frosted fields and mirrored devices

  • Series: continuous run of a coin type, like Buffalo nickels

  • Sheldon Grading Scale: 1–70 grading scale by Dr. William Sheldon, widely used today

  • Slab: slang for an encapsulated coin holder

  • SP: abbreviation for Specimen strike

  • Specie: coined physical money, as opposed to notes or checks

  • Star (★): NGC indicator for coins with standout eye appeal

  • Starred Edge: coin edge decorated with stars

  • Strike: process or quality of coin production

  • Trade Dollar: US silver dollar made mainly for export, 1873–1885

  • Trime: US three-cent silver coin issued 1851–1873

  • Type Collecting: assembling one example of each coin design

  • UC: short for Ultra Cameo effect designation

  • Uncirculated: unworn, mint-state coin condition

  • Variety: coin differing in some way from the standard design

  • Very Fine (VF): grade levels 20, 25, 30, or 35

  • Very Good (VG): grade levels 8 or 10

  • Wheel Mark: concentrated scratches from coin-counting machine wheels

  • Wire Rim: thin raised line around sharply struck coins

Have Coins or Currency You Need Help Understanding?

Reading definitions is helpful, but coins are often best evaluated in person. Condition, authenticity, metal content, rarity, collector demand, and current market prices can all affect value. Two coins that look similar online may be worth very different amounts depending on grade, mint mark, damage, cleaning, or certification.

Oakton Coins & Collectibles is a trusted Chicago-area coin dealer located in Skokie, Illinois. We buy and evaluate U.S. coins, world coins, gold and silver bullion, paper money, proof sets, mint sets, inherited coin collections, and related collectibles. Our team can help explain what you have in clear, practical terms without pressure to sell.

For more information, visit our pages on coins and paper money, selling inherited coin collections, PCGS and NGC certified coins, and gold and silver bullion.

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