Coins Context Definition

Slab (or Slabbed Coin)

A coin professionally authenticated, graded, and permanently sealed in an air-tight, tamper-evident plastic holder by third-party services like NGC or PCGS.

Related Numismatic Terms & Vocabulary

Numismatics

The formal study and collection of currency, including coins, tokens, paper money, and related medals.

Obverse

The front side of a coin, usually featuring the reigning monarch's head, portrait, or national emblem (commonly called 'heads').

Reverse

The back side of a coin, typically featuring the denomination, heraldic design, or commemorative artwork (commonly called 'tails').

Bullion

Precious metals (such as gold, silver, or platinum) valued strictly by weight and purity rather than face value or numismatic rarity.

Sovereign

A flagship British gold coin introduced in 1817 containing 7.32 grams of fine gold (22-carat), widely traded both as bullion and a collector key piece.

Hammered Coinage

Historic coins produced manually prior to 1662 by placing a blank metal disk between two dies and striking the top die with a hammer.