Coin Terminology and Glossary

The Coin Collecting Dictionary includes 546 titles used widely in the coin collectors community, and has received over 1120873 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) 56049  13.24%
Silver Clad 32944  7.78%
Coin Silver 25007  5.91%
Slabbed Coins 23938  5.66%
BN 23493  5.55%
Encapsulated Coin 22443  5.30%
RB 21945  5.19%
PF (PF60, PF70) 18923  4.47%
Deep Cameo (DC or DCAM) 18881  4.46%
Reeded Edge 17760  4.20%
Ultra Cameo (UCAM) 17559  4.15%
Obverse or Face side 16994  4.02%
PR (PR60, PR70) 16917  4.00%
Rarity 16805  3.97%
PQ 16481  3.89%
MS (MS60-MS70) 16169  3.82%
Incuse 15513  3.67%
Coin drop 15352  3.63%
High Relief 15137  3.58%
Reverse Cameo 14870  3.51%