Weenie

weenie An individual who is obsessed with a particular series or group of series. Examples are copper weenies, bust half weenies, etc.
wheel mark Synonymous with Â"counting machine mark.Â" ...

You can learn the meaning of such terms as burnishing, chasing, essai, moose, sweating and weenie.

See also: Coin, Obverse, Quarter, Half Dollars, Proof