Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 1002108 search inquires.

Selected 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) 54957  13.70%
Silver Clad 31958  7.97%
Coin Silver 24032  5.99%
Slabbed Coins 22942  5.72%
BN 22513  5.61%
Encapsulated Coin 21588  5.38%
RB 20929  5.22%
Deep Cameo (DC or DCAM) 18037  4.50%
PF (PF60, PF70) 17743  4.42%
Reeded Edge 16791  4.19%
Ultra Cameo (UCAM) 16702  4.16%
PR (PR60, PR70) 15735  3.92%
Rarity 15575  3.88%
PQ 15565  3.88%
MS (MS60-MS70) 15324  3.82%
Incuse 14614  3.64%
Coin drop 14327  3.57%
High Relief 14253  3.55%
Reverse Cameo 13894  3.46%
Obverse or Face side 13573  3.38%