UPDATE: It's not unanimous whether these coins are DDO or not, but regardless if it is a DDO and that is notching we see, it's so minor that it's not worth getting excited about.
Ok this is getting a bit ridiculous, two more Kennedy halves showing notching on "IN GOD" - these shots are of two 1973 P halves from the SAME ROLL. Perhaps there's some master doubling on this year?
1973 P KHD - #1
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1973 P KHD - #2