Full Version: Copper Wash/Sintered Planchet
CoinPeople.com > Specialized Numismatic Forums > Error and Variety Coin Forums > Online error coin refrence guide by Matt Dinger (Lost Dutchman) > Chapter 1 - Planchet Errors
Copper Wash/Sintered Planchet – Sintered or copper washed planchets are coin blanks left in the annealing furnace for an extended period of time, causing dust from previous coins to embed in the blank planchet making it darker then usual
Sintered Planchet
copper washed planchet
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