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<p>[QUOTE=&quot;-jeffB, post: 2666491, member: 27832&quot;]I <i>have</i> tried using Photoshop (and similar image-manipulation tools), but any remaining date detail is swamped by surface discoloration, uneven lighting, and camera/image noise. For this sort of thing, a human eye, in conjunction with moving the coin under different lighting directions, seems to do better than anything you can drag out of a static image.</p><p><br /></p><p>For vehicle badges and firearm stamps, I think acid treatment relies on the same kind of work-hardening that you get in nickel alloys. It apparently doesn&#039;t happen to the same extent with silver. I still do want to experiment, though.[/QUOTE]</p><p><br /></p>

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