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<p>[QUOTE=&quot;Roerbakmix, post: 3766422, member: 100731&quot;]I really like Nerva denari, mostly because of the large portruding nose. This denarius is my only Nerva coin, but I like it the most (heh) because of the cleaning process, partly posted before here (first and second image):</p><p>[ATTACH=full]1008141[/ATTACH]</p><p><br /></p><p>The coin was cleaned both mechanically and chemically, as it was encrusted with an iron oxide layer (brown coating on photo 1) with a silver chloride (or horn silver) layer below (black coating on photo 2). Transition of photo 1 to 2 was done mainly with purified citric acid solutions, transition of photo 2 to photo 3 was done using a sodium thiosulphate solution. There is still some silver chloride (grey spots) and iron oxide (brown spots) left, but I&#039;m content with the result so far.[/QUOTE]</p><p><br /></p>

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