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<p>[QUOTE=&quot;Roerbakmix, post: 4437059, member: 100731&quot;]Thanks [USER=56653]@seth77[/USER]. This was one of my earliest coin restoration experiments. The latest was this one:</p><p>[ATTACH=full]1109943[/ATTACH]</p><p>COUNT OF HOLLAND, Willem V. Denomination: AR Hollandse Groot, minted: Dordrecht, the Netherlands; 1378-1388</p><p>Obv: +GVILLELMxDVXxCOMxHOLAxZxZELAND. Helmet in quetrefoil between two Dutch-Bavarian coat of arms, with one ring in each angle</p><p>Rev: +BENEDICTxQVIxVENITxIxNOMINExDNI, floriated cross</p><p>Weight: 2.02g; Ø:26mm. Catalogue: Grolle 17.9.2A. Provenance: Metal detecting find Oud-Zevenaar, near the assumed location of an 8th century church. ; acq.: 04-2020</p><p>Very small flan crack at 6 o clock on the reverse</p><p><br /></p><p>The coin had several problems:</p><p>1) iron oxide depositions, mainly on the obverse, but also on the reverse. These are difficult to remove (I probably need to resort to stronger acids)</p><p>2) hornsilver depositions, mainly between the legend[/QUOTE]</p><p><br /></p>

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