Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 1132980 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) 56140 13.21%
Silver Clad 33029 7.77%
Coin Silver 25118 5.91%
Slabbed Coins 24047 5.66%
BN 23583 5.55%
Encapsulated Coin 22528 5.30%
RB 22035 5.18%
PF (PF60, PF70) 19015 4.47%
Deep Cameo (DC or DCAM) 18956 4.46%
Reeded Edge 17843 4.20%
Ultra Cameo (UCAM) 17646 4.15%
Obverse or Face side 17062 4.01%
PR (PR60, PR70) 17034 4.01%
Rarity 16924 3.98%
PQ 16571 3.90%
MS (MS60-MS70) 16262 3.83%
Incuse 15603 3.67%
Coin drop 15469 3.64%
High Relief 15222 3.58%
Reverse Cameo 14974 3.52%