Hello everyone, I'm not sure when I presented this Mint Error in the past (or if I ever have) 1967 - 50C Struck on Thin Planchet 9.6 grams Kennedy Half Dollars from 1965–1970 were made with 60% copper and 40% silver. This combination lead to a total weight of 11.50 grams
Wonder whether the layers were thinned proportionately, or whether it was the core that was thinner, or one of the cladding layers? (I assume you'd be able to tell if it were a missing clad layer...)
@-jeffB It's either the sheet was rolled to thin or the planchet could of been punched from the incorrect stock. Most likely Quarter stock. *Edit.. Couldn't be from Quarter stock because in 1967 they had started using Clad with a copper core.
But in 1967, quarter stock would've been CN-clad. A non-silver 1967 half seems like it would be a really big deal. If I had to guess, I'd assume "rolled thin" as you said, probably with the layers thinned proportionately. (Rolling the stock to the right thickness does happen after cladding, right?)
