OK, I've had this dandy of a coin for a while and could really use some useful advise as to what happened to this coin and if the Clad that is showing is something that occured at the Mint or after the Mint. Have you ever seen a coin like this where it appears to be cut leaving part of the Clad still on the coin from something the happened at the Mint? The coin weighs 9.6 grams where a normal halve weighs 11.5 grams in 1967. Thank you, Dave
That is a genuine planchet error. Clamshell lamination that split off ofter striking. The upper silver layer was not bonded to the copper except in the area that is still on the coin. It is called a clamshell lamination because if you were to look at it from the edge it opens up like a clamshell and is "hinged" at the bottom. Some time after the coin was struck the hnged silver lyer broke off leaving just the part that was well bonded. (If it had broken off before striking, the copper area would show much clearer details.)
Most of the obverse clad layer split off after the strike. It was preceded by a "clamshell separation", rather than a "clamshell lamination". Lamination errors are due to a poor alloy, while clamshell separations are due to poor bonding. Splitting hairs, I know.
Thank you very much! WOW! Big Thank You's to the 2 Gentleman who gave me such great information regarding this Halve Dollar Error. I do appreciate the kindness very much. This is a great service you all have here and someday I would like to repay this debt by teaching younger ones about the hobby of Error Coin Collecting and alike. Thank you again and take care, Dave
