I recently posted about a case number anomaly with one of my DS 0's, there's another difference also and I wonder if it's because the patents that were pending for the symbol etc. had been granted by the time this one was manufactured. The early model DS1's have no mention of the patents and this '0', was, according to the case number, produced after the first DS1's. I have looked very closely under magnification and there is simply no sign of it ever having been stamped, it also shows no signs of heavy polishing. Has anyone seen another like this one? Thoughts?

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