No cost, no registration, no passwords -- just aloha, fun & authoritative answers
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Restoring a proof coin to original finish

Is there any way to restore a Proof coin to its original mirror finish. I've a Bahamas proof 10 Dollar coin which had become tarnished inside the plastic container. I thought I would be smart and try to clean it using a Cotton Bud and very fine car polish called 'Mer'. All I succeeded in doing (you've probably guessed by now!) was putting very fine scratches on the surface of the mirror surface. Can anyone help me?

Thanx

Ronnie Scott
Hobbyist (Coin Collector) - Paisley, Renfrewshire, Scotland United Kingdom
2004

Try citric acid [on eBay or Amazon] (5%)-if coin is copper or copper alloy(ammonium citrate solution is better/ph9/ )Rinse well and dry it with pure alcohol or acetone [on eBay or Amazon]. If your coin is silver you can use sodium thiosulphate [on eBay or Amazon] solution (30%)!

Goran Budija
- Cerovski vrh Croatia
2004

It's a silver half dollar and it was plated for a brooch. I would like to get to the original coin again if possible. please help.

Mark Rokes
consumer - Port Charlotte, FL, U.S.A.
2006

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: