Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 terms used widely in the coin collectors community, and has received over 504123 search inquires.

Selected term: Rarity Scale
Explanation: A convention for designating the rarity of a coin, such as Sheldon's system (with values such as R1 for common pieces and R6 for extremely rare specimens) and the Universal Rarity Scale invented by Alan Herbert (with designations such as URS3). The often used Sheldon scale is:
  • R8 = 1-3 known (estimated), 'Unique or Nearly Unique'
  • R7 = 4-12 known, 'Extremely Rare'
  • R6 = 13-30 known, 'Very Rare'
  • R5 = 31-75 known, 'Rare'
  • R4 = 76-200 known, 'Very Scarce'
  • R3 = 201-500 known, 'Scarce'
  • R2 = 501-1250 known, 'Uncommon'
  • R1 = over 1251 known, 'Common'

Most popular coin terms

DefinitionSearchesPercentage
Specimen Proof (SP-70 or PF-70) 31790  13.88%
Silver Clad 23877  10.42%
BN 14917  6.51%
Encapsulated Coin 14296  6.24%
RB 12896  5.63%
Slabbed Coins 12333  5.38%
Deep Cameo (DC or DCAM) 10822  4.72%
Coin Silver 10715  4.68%
Reeded Edge 10063  4.39%
Ultra Cameo (UCAM) 9976  4.35%
PF (PF60, PF70) 9566  4.18%
PQ 8526  3.72%
MS (MS60-MS70) 8498  3.71%
PR (PR60, PR70) 8208  3.58%
High Relief 8032  3.51%
Obverse or Face side 7706  3.36%
Rarity 6936  3.03%
Incuse 6648  2.90%
Reverse Cameo 6640  2.90%
Brilliant Uncirculated (BU) 6557  2.86%