I have what I believe to be a 1989-d Washington quarter clad error, the color looks like a dark nickel color.Does anyone have an idea of what the weight would be if a Washington quarter was missing the clad layer ? Thanks Bruce.
The specification is 5.67g, so a missing layer coin should be in the vicinity of 3.8, or maybe a little more because the outer layers don't seem to be quite as thick as the center layer. Unfortunately I never weighed the missing reverse clad bicentennial quarter i found in a mint bag, and sold to Fred Weinberg about 27 years later. I can tell you that the thickness difference is substantial. Bear in mind that since the center layer is the one with a much higher copper content, a true missing clad error should be coppery on one side, not dark nickel-colored.
Roy. Thanks for the information your explanation as alway was clear and to the point you have answered my question. Thanks Bruce.
Source: http://www.coinresource.com/articles/state_quarter_missing_clad.htm Hope this helps Regards, Jos
