Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 884960 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) 53348  14.35%
Silver Clad 30622  8.24%
Coin Silver 22637  6.09%
Slabbed Coins 21484  5.78%
BN 20894  5.62%
Encapsulated Coin 20332  5.47%
RB 19288  5.19%
Deep Cameo (DC or DCAM) 16673  4.48%
PF (PF60, PF70) 16220  4.36%
Reeded Edge 15423  4.15%
Ultra Cameo (UCAM) 15365  4.13%
PQ 14166  3.81%
MS (MS60-MS70) 14035  3.77%
PR (PR60, PR70) 14012  3.77%
Rarity 13751  3.70%
Incuse 13059  3.51%
High Relief 12912  3.47%
Coin drop 12896  3.47%
Reverse Cameo 12338  3.32%
Obverse or Face side 12211  3.28%