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Radar Note on a Series 1996 $100 Federal Reserve Note.

Radar Note – A Fancy Number Federal Reserve Note

By Charles Morgan and Hubert Walker for CoinWeek Notes .....   (n.) Concerning currency and paper money from the United States, a radar note is a Federal Reserve Note with a palindromic serial...
1797 Capped Bust Eagle. Image: Stack's Bowers / CoinWeek.

Transposed Arrows – A Heraldic Term and a Strange Bias on Coins

By Charles Morgan and Hubert Walker for CoinWeek Notes .....   (n.) In heraldry, the term transposed arrows means that an eagle is clutching arrows in its...
Three Choice Proofs, graded PR63 by PCGS and CACG. Image: David Lawrence Rare Coins / CoinWeek.

Choice Proof – A Coin That’s Not Quite Gem

By Charles Morgan and Hubert Walker for CoinWeek Notes .....   (adj.) Choice Proof is a term used to describe an unimpaired Proof coin that is not...
Mullet. Stars on an American flag. Image: Adobe Stock.

Mullet – A Heraldic Star on Coins

By Charles Morgan and Hubert Walker for CoinWeek Notes .....   (n.) In heraldry, a mullet refers to a star with straight rays, such as the star...
2024 Army Silver Medal. Medal Turn is illustrsted. Image: CoinWeek / U.S. Mint.

Medal Alignment – One Way to Orient Obverse and Reverse

By Charles Morgan and Hubert Walker for CoinWeek Notes .....   (n.) To say that a numismatic object--specifically a round object made of metal with designs engraved...
Sheldon Scale. Image: Adobe Stock / CoinWeek.

The Sheldon Scale – How Coins Are Graded

By Charles Morgan and Hubert Walker for CoinWeek Notes .....   The Sheldon Scale (or Sheldon Grading Scale) is a 70-point numerical grading system for evaluating...
The 2000 Library of Congress bimetallic commemorative coin was the first bimetallic coinage struck by the United States Mint since silver plugs were used on some coins in the 1790s. Image: United States Mint / CoinWeek.

Kernel – Inner Disc of a Bimetallic Coin

By Charles Morgan and Hubert Walker for CoinWeek Notes .....   (n.) In numismatic terms, the kernel is the central or inner disc of a bimetallic coin....
The back of the 1775 Massachusetts "Sword in Hand Note." Image: Heritage Auctions / Adobe Stock / CoinWeek.

Ense Petit Placidam Svb Libertate Qvietem

Ense Petit Placidam Svb Libertate Qvietem is a Latin phrase meaning “Issued in the Defense of Liberty.” It appears on the 1775 Massachusetts “Sword-in-Hand”...
Three coins in PCGS rattler holders. Image: Stack's Bowers / CoinWeek.

Rattler PCGS Coin Holder – A Beloved Early Slab

(n.) Slang. A rattler is an early-generation PCGS coin holder or "slab". It is so-called because coins tend to rattle inside them and sometimes rotate in...
Certification Numbers from CACG, NGC, and PCGS.

Certification Number – How to Verify Graded Coins

By Charles Morgan and Hubert Walker for CoinWeek Notes ..... (n.) A certification number is a unique identifier printed on a coin's label on coins encapsulated by a third-party grading company, which...

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