LostDutchman Posted November 17, 2005 Report Share Posted November 17, 2005 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 Quote Link to comment Share on other sites More sharing options...
LostDutchman Posted April 3, 2006 Author Report Share Posted April 3, 2006 Sintered Planchet Quote Link to comment Share on other sites More sharing options...
LostDutchman Posted April 3, 2006 Author Report Share Posted April 3, 2006 copper washed planchet Quote Link to comment Share on other sites More sharing options...
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