This may seem like an stupid question, but on the Kennedy 40 percent halves how common is it to see the copper middle layer. I noticed it on one of mine from an Uncirc, Mint set. But when I looked at the other ones, at hand, I did notice it on theme. My others are locked up in my Safe deposit box and I did not want to go to the bank for something which is probably a simple answer!
Slight difference in the core of the silver vs. CuNi clad- silver clad has a 20/80 AgCu core while CuNi clad is pure copper. The core on silver clads will sometimes have a dark grey appearance rather than a coppery appearance.
IMO, after searching a few thousand halves, don't bother date checking. I've searched over one hundred thousand dollars in halves and don't miss any 40%, on the very rare occasion I might have missed a 40 that I didn't distinguish from non-silver, but I won't lose sleep over it. If you are looking for errors or other types, go ahead and date search.
When I listen to LED ZEPPELIN...so do my neighbors... Roll hunting since '77 Dirt fishing since '72
I agree. If you are just mining silver go over the edges. Sometimes you get a tricky 40%er but generally they are easy enough to see. For the time you save and what you may miss it is worth doing.
I only look at the dates because I'm still looking for 1987P - I've been through > 20K in halves and only once have I been surprised by one that looked clad from the edge. You can even spot 81's and proofs from the edge because they're so "fat."
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