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<p>[QUOTE=&quot;gsimonel, post: 3221608, member: 82549&quot;]I would use brass tools and a stereo microscope.</p><p><br /></p><p>If you&#039;re really serious about cleaning uncleaned coins, a stereo microscope is a good investment. You can usually pick a decent one up for around $150.</p><p><br /></p><p>To make brass tools, go to a hobby or hardware store and pick up a small brass rod and a sharpening stone. File the end of the rod down into a point or blade. Then look through the microscope to scrape away the encrustations with the tool. Brass is softer than bronze, so it won&#039;t damage the coin surface. But be very careful with coins with soft green patinas, because it can scratch the patina. Always test before going full speed.</p><p><br /></p><p>But for a coin with encrustations like the one @Roman_Collector posted, a brass tool is the best way to go.[/QUOTE]</p><p><br /></p>

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