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<p>[QUOTE=&quot;Jon L, post: 4417706, member: 64167&quot;]Extra virgin olive oil is a standard when cleaning bronze or copper coins.&nbsp; Soak for a few days and then brush with a cut down toothbrush.&nbsp; Wipe clean and then soak in distilled water.&nbsp;&nbsp; Again attack with a toothbrush.&nbsp; When you&#039;re satisfied, soak with fresh distilled water to remove any vestiges of the oil&#039;s acid and wipe with a soft cloth. </p><p><br /></p><p>Your coin is in great shape and shouldn&#039;t take much effort, only time.&nbsp; Using oil or distilled water on this coin will be fine.&nbsp; Always use fresh liquid for each soak.</p><p><br /></p><p>I use primarily distilled water when cleaning Roman bronze coins, but that will take weeks/months as I allow each soak for 3-7 days.&nbsp; Because the water is distilled, it leeches the mineralization slowly. </p><p><br /></p><p>If the coin has serious bronze disease, mix a little baking soda and washing soda into the distilled water during the cleaning process.&nbsp; Helps arrest bronze disease in the future.</p><p><br /></p><p>This common Roman bronze looked like a flat skipping stone with no detail when I bought it.&nbsp; Took 3 months, but here&#039;s the results using olive oil and distilled water.&nbsp; Full disclosure - I also used a dental pick, stereo microscope and brass brush. </p><p><br /></p><p>[ATTACH=full]376294[/ATTACH][/QUOTE]</p><p><br /></p>

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