Is there any way to identify these German planchets without professional analysis?
1. tons of experience, handling and examining mint state coins. I have opened and examined at least 40 mint rolls from 1996 over the years.
2. proper lighting.
You can only do this on mint state coins (i.e., never circulated into pocket change). In the learning process, I sacrificed several "questionable" coins by popping the cores and confirming if I was right or wrong (German planchets have grooved cores)
There is an excellent article in the CN Journal on this topic, if you are an RCNA
member, you can look up the author 'Flamenbaum' and find it.
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