Given all the collector interest which started this topic. Now that things had quieted down a little, perhaps some other examples can be posted? I had hoped for the additional examples to compare (and possibly explain) something that seems quite apparent with the first example. Can anyone provide an explanation for the diffused appearance of the H�hnlein signature as illustrated below? FP

NSKK_etch_mark.jpg (75.7 KB, 469 downloads)