I'm still obsessed with the idea of the "fingerprint". If it can be prooven that two oaks from the same die exhibit the same characteristics, i.e. fingerprints, a third example can be checked against those unmistaken features.
I compared Rich's L/50 with Brians. The image is inversed for better clarity. I can absolutely see in the shown area distinctive features that are the same in both oaks. Actually, this should be the case when they are produced from the same die. However, I agree that the one or the other feature might not be present because of wear/handling/ polishing or what have you. But some always should be there to compare. The task here is to find maybe ten identifiable features that are present on both oaks. Then look for those features on other oaks in question. If none are there I think one can be pretty sure that those are not from the same die. At least IMHO. This has nothing to do with collecting experience, this is just comparison based on mechanical features and statistics. Here are three very easy features, but clearly the same:
I compared Rich's L/50 with Brians. The image is inversed for better clarity. I can absolutely see in the shown area distinctive features that are the same in both oaks. Actually, this should be the case when they are produced from the same die. However, I agree that the one or the other feature might not be present because of wear/handling/ polishing or what have you. But some always should be there to compare. The task here is to find maybe ten identifiable features that are present on both oaks. Then look for those features on other oaks in question. If none are there I think one can be pretty sure that those are not from the same die. At least IMHO. This has nothing to do with collecting experience, this is just comparison based on mechanical features and statistics. Here are three very easy features, but clearly the same:
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