Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 1034339 search inquires.

Random title: Shill Bidding
Explanation: A 'shill' is someone working for the house, whether a casino, auction house, etc. The shill's function is to increase the action ( = $$) at that place. In an auction, a shill would drive up bids by actively bidding. However, should the shill 'win' a lot, of course they would not pay for it.

This is strictly unethical, probably illegal (fraud?) but certainly occurs occasionally. There's no easy way to know a shill as many auctions have the same people turning up regularly. Best thing to do with auctions is:

  • Preview auction material closely so that you know what you're bidding on.
  • Decide in advance the most you'll pay, taking into account any bidder's premium (typically 10-15% on top of the bid) and
  • Stick to your game plan on bidding.

That way you'll purchase things at a price you are comfortable with. Better to lose some thanpay way too much.

Most popular coin titles

DefinitionSearchesPercentage
Specimen Proof (SP-70 or PF-70) 55241  13.60%
Silver Clad 32194  7.93%
Coin Silver 24280  5.98%
Slabbed Coins 23200  5.71%
BN 22776  5.61%
Encapsulated Coin 21802  5.37%
RB 21237  5.23%
Deep Cameo (DC or DCAM) 18242  4.49%
PF (PF60, PF70) 17974  4.43%
Reeded Edge 17033  4.19%
Ultra Cameo (UCAM) 16902  4.16%
PR (PR60, PR70) 15963  3.93%
Rarity 15926  3.92%
PQ 15797  3.89%
MS (MS60-MS70) 15539  3.83%
Incuse 14850  3.66%
Coin drop 14575  3.59%
High Relief 14475  3.56%
Reverse Cameo 14152  3.49%
Obverse or Face side 13881  3.42%