Untreated Roman Denarius From Severus Alexander

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Author	Replies: 7 / Views: 1,616
Archeo1982 Pillar of the Community Netherlands 521 Posts	Posted 10/29/2017 09:30 am What kind of cleaning is possible for this bronze pest? Obv: Laureate Emperor facing right Legend: IMP C M AVR SEV ALEXAND AVG Rev: Mars standing left, holding branch and reversed spear Legend: P M TR P II COS P P Mass: 2,37 gramm Diameter: 20mm Report this Post to the Staff

Spence Moderator United States 34418 Posts	Posted 10/29/2017 11:34 am This is my go-to thread on treating bronze disease: http://goccf.com/t/61519 There are others here too (easily find-able if you use the CCF search function with "bronze disease" as the keywords). It would be way cool if you posted follow-up pics after treatment! "If you climb a good tree, you get a push." -----Ghanaian proverb "The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz Edited by Spence 10/29/2017 11:35 am Report this Post to the Staff
echizento Moderator United States 23731 Posts	Posted 10/29/2017 2:55 pm The weight suggests that this is a Limes denarius. Report this Post to the Staff
Paul Bulgerin Pillar of the Community United States 3098 Posts	Posted 10/29/2017 5:07 pm If the coin is silver, then a soak in lemon juice should take care of the issues. If, however, it's a limes, as has been suggested, then that won't work. Paul Bulgerin Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 10/29/2017 5:38 pm Pick as much of the verdigris off as you can, with a wooden orange stick (thick, stronger toothpick.) Acetone bath, then try Verdicare. Temporary seal against water and air with clear coat acrylic laquer seal, - this is easily removed with acetone. Put into a 2x2 with a clear acetate sheet insert to protect the lacquer. Staple the 2x2. May still need long term pasivation. Report this Post to the Staff
Archeo1982 Pillar of the Community Netherlands 521 Posts	Posted 10/29/2017 5:47 pm Thanks! I start with the toothpick Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 10/29/2017 6:05 pm Don't be too surprised if you find corrosion pitting under the green stuff. If those pits exist, irreversible damage has already been done in those areas. Because of this, the cleaning out of those pits with a steel pin won't do further damage in those areas. The reverse is going to be a long slow job; it may take hours to do properly. Lots of patience will be needed to do well. Edited by sel_69l 10/29/2017 6:12 pm Report this Post to the Staff
Archeo1982 Pillar of the Community Netherlands 521 Posts	Posted 10/29/2017 9:47 pm I stopped the picking. First I'm going to re - read the 5th chapter about metal conservation of the book: The elements of Archaeological Conservation written by J.M. Cronyn. Also available as pdf: http://nautarch.tamu.edu/class/anth...s/Cronyn.pdf Edited by Archeo1982 10/29/2017 9:47 pm Report this Post to the Staff
	Replies: 7 / Views: 1,616

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