Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 1095110 search inquires.

Selected title: Machine Doubling

Explanation: Doubling of details resulting from loose dies during striking (generally considered to have no numismatic value)

Most popular coin titles

Definition	Searches	Percentage
Specimen Proof (SP-70 or PF-70)	55832	13.32%
Silver Clad	32739	7.81%
Coin Silver	24799	5.92%
Slabbed Coins	23721	5.66%
BN	23307	5.56%
Encapsulated Coin	22242	5.31%
RB	21743	5.19%
PF (PF60, PF70)	18719	4.47%
Deep Cameo (DC or DCAM)	18717	4.47%
Reeded Edge	17551	4.19%
Ultra Cameo (UCAM)	17358	4.14%
Obverse or Face side	16825	4.01%
PR (PR60, PR70)	16631	3.97%
Rarity	16572	3.95%
PQ	16293	3.89%
MS (MS60-MS70)	16004	3.82%
Incuse	15313	3.65%
Coin drop	15134	3.61%
High Relief	14949	3.57%
Reverse Cameo	14676	3.50%