Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 859147 search inquires.

Random title: Toning
Explanation: Natural patination or discoloration of a coin's surface caused by the atmosphere over a long period of time. Certain types of toning are universally attractive to numismatists and certain other types are universally viewed as being ugly. Concentric-circle toning can be exceedingly beautiful. On a silver coin, for instance, you might see ocean blue or rose red toning around the periphery fading into a sunset-golden center. Such a coin would have universal appeal because the toning is beautiful and original and gives the coin a distinctive personality. By contrast, a coin which is black-which looks as if it has been exposed to the air for a long time-isn't nearly as attractive. In fact, many numismatists might consider it to be downright ugly. Many new collectors think brilliance is best, but most experienced hobbyists actually prefer coins with attractive toning. Toning gives a coin its overall aesthetic appeal-its eye appeal. Since toning is so desirable, certain unscrupulous people have devised ways of treating coins to give them the appearance of being naturally toned. The colors imparted to these coins by 'artificial toning' may fool the uninitiated, but experienced individuals can spot it readily. Grading services will not certify coins with artificial toning.

Most popular coin titles

DefinitionSearchesPercentage
Specimen Proof (SP-70 or PF-70) 52687 14.54%
Silver Clad 30177 8.33%
Coin Silver 22182 6.12%
Slabbed Coins 21054 5.81%
BN 20413 5.63%
Encapsulated Coin 19907 5.49%
RB 18831 5.20%
Deep Cameo (DC or DCAM) 16208 4.47%
PF (PF60, PF70) 15708 4.33%
Reeded Edge 14979 4.13%
Ultra Cameo (UCAM) 14927 4.12%
PQ 13750 3.79%
MS (MS60-MS70) 13624 3.76%
PR (PR60, PR70) 13585 3.75%
Rarity 13217 3.65%
Incuse 12624 3.48%
High Relief 12511 3.45%
Coin drop 12342 3.40%
Reverse Cameo 11867 3.27%
Obverse or Face side 11768 3.25%