biokemist6 & John1: Thanks for the information regarding the tisssue test. I compared my bicentennial coin to a 1972 clad half and when tested by the sacrificial tissue (of the toilet variety) the bicentennial coin was noticably lighter than the '72 coin. So I believe that with your help that the bicentennial coin is silver.
So then I was curious and went to look at my Kennedy Dansco album and I noticed that there are three holes for the bicentennial S coin: A S proof, a S 40% BU, and a S 40% Proof.
So I now believe that by virtue of your help definitively I have a 1976 S 40% BU coin as proven by weight and tissue test
. However, because it was found in circulation (
) I don't think that it can truely be called BU, but it is truely and definitively 40% silver.
So to each of you I say thank you and hope that I can be of service to you in the future.