Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 1072408 search inquires.

Selected title: Breast feathers
Explanation: The central feathers seen on numerous eagle designs. Fully struck coins usually command a premium and the breast feathers are usually the highest point of the reverse. (They are the most deeply recessed area of the die, so metal sometimes does not completely fill the breast feather area, usually because of insufficient striking pressure. Incorrectly spaced or lapped dies will also cause 'striking' weakness)

Most popular coin titles

DefinitionSearchesPercentage
Specimen Proof (SP-70 or PF-70) 55597  13.48%
Silver Clad 32495  7.88%
Coin Silver 24615  5.97%
Slabbed Coins 23507  5.70%
BN 23082  5.60%
Encapsulated Coin 22071  5.35%
RB 21540  5.22%
Deep Cameo (DC or DCAM) 18538  4.49%
PF (PF60, PF70) 18448  4.47%
Reeded Edge 17354  4.21%
Ultra Cameo (UCAM) 17178  4.16%
PR (PR60, PR70) 16388  3.97%
Rarity 16313  3.95%
PQ 16104  3.90%
MS (MS60-MS70) 15819  3.83%
Incuse 15121  3.67%
Coin drop 14926  3.62%
High Relief 14770  3.58%
Reverse Cameo 14447  3.50%
Obverse or Face side 14182  3.44%