Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 769284 search inquires.

Selected title: Cleaning
Explanation: Refers to removing dirt or otherwise altering the appearance of a coin through the use of chemical or abrasive materials that damage or scratch the surface in a detectable fashion. Cleaning is different than whizzing or mechanical alteration of the surface. A gentle cleaning in water or solvent that leaves no marks or residue is usually not considered harmful. Cleaning by either mechanical or chemical means that are detectable will generally result in lowering the grade and value of a coin

Most popular coin titles

DefinitionSearchesPercentage
Specimen Proof (SP-70 or PF-70) 44002  13.38%
Silver Clad 28967  8.81%
Coin Silver 21025  6.39%
Slabbed Coins 19567  5.95%
BN 19134  5.82%
Encapsulated Coin 18466  5.62%
RB 17777  5.41%
Deep Cameo (DC or DCAM) 14546  4.42%
PF (PF60, PF70) 14446  4.39%
Reeded Edge 13895  4.23%
Ultra Cameo (UCAM) 13634  4.15%
PQ 12678  3.86%
MS (MS60-MS70) 12400  3.77%
PR (PR60, PR70) 12260  3.73%
Rarity 11541  3.51%
Incuse 11474  3.49%
High Relief 11473  3.49%
Coin drop 10865  3.30%
Obverse or Face side 10725  3.26%
Reverse Cameo 9928  3.02%