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<p>[QUOTE="mrbreeze, post: 24561853, member: 86726"]Try km180.1</p><p><br /></p><p>I don’t know if they used official stamps on lang bars, but often times, stamps which aren’t matching a purposeful counter mark are punches to test for purity or confirm that it is what it is supposed to be. Not sure if that is the case here, but the punch inside the circle looks like a punch to detect silver content. Different businesses had different punches so that may explain the three different marks.[/QUOTE]</p><p><br /></p>
[QUOTE="mrbreeze, post: 24561853, member: 86726"]Try km180.1 I don’t know if they used official stamps on lang bars, but often times, stamps which aren’t matching a purposeful counter mark are punches to test for purity or confirm that it is what it is supposed to be. Not sure if that is the case here, but the punch inside the circle looks like a punch to detect silver content. Different businesses had different punches so that may explain the three different marks.[/QUOTE]
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