• When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Archived

This topic is now archived and is closed to further replies.

1917 SLQ grade opinion

Started by JIM F.,

15 posts in this topic

michael

michael

Posted
Posted

au details

 

if you want to make it look more presentable/saleable/desirable to the uninitiated which is most, then give it to someone who is an expert at using liver of sulfur

 

and depending on how much lustre is still present on the coin (and i CAN'T tell from the photo) it might look even better still

Link to comment
Share on other sites
JIM F.

JIM F.

Posted
  • Author
Posted
au details

 

if you want to make it look more presentable/saleable/desirable to the uninitiated which is most, then give it to someone who is an expert at using liver of sulfur

 

and depending on how much lustre is still present on the coin (and i CAN'T tell from the photo) it might look even better still

 

Is this an appropriate treatment technique?

 

Liver of Sulfur - Solid potassium sulfides. These will readily oxidize copper and silver. Dissolve a small lump of liver of sulfur in a couple of cups of hot water and then dip the coins in this solution. You might keep the solution heated (185 or so), this will aid oxide formation. If the coin has previously been 'dipped' (a thin layer of metal of the coin has been stripped with sulfuric acid), you may have to wait even longer. Your goal in this process is to have the coin darken, to replicate the 'aged' look - which is natural toning. Next, dip in tap water mixed with baking soda with a final rinse in de-ionized water. You could pat dry with jewelry clothe, or use rottenstone or baking soda paste on a dampened q-tip. Now very lightly rub excess black tarnish from the higher devices of the coin.

Link to comment
Share on other sites
Go to topic listing