Last week I took the opportunity to buy 2 boxes of Kennedy Halves. I didn't have high expectations when I started searching, but c'mon... Couldn't there have been more than just
1 40% half, out of 2000 coins!

The one that I got from the 2 box search is a 1965 P. It's blast white, with some tarnish on the cheek, jaw and neck. Looks like the coin has never seen circulation.
What caught my eye was when I opened the roll, and saw one white rimmed coin among the 19 other clad coins. My first thought was that it was a 90% silver coin, but when I pulled it to look, it was 1965... Which is supposed to be 40% silver....
The rim of the 1965 looked like a 90% silver coin's rim - it was all the same white, with nothing indicating a clad layer. It didn't look like two different metals "sandwiched" together, like a typical clad coin. I looked at a few other 40% silver clad Kennedy rims, and they all had the same appearance of two metals "sandwiched" together (granted, none of the comparison coins were blast white).
Are you always supposed to be able to see the seperation of the clad and core metal, on the rim of clad coins?
The first picture is of the rim of the 1965 Kennedy that I am asking about.
The second picture is of all silver clad Kennedy Halves, with the 6th coin from the top being the 1965 in question.