"How to remove gold from coins, etc.?"
Current postings:March 22, 2022
Hello, I know this is for silver but I figured it would be similar to gold.
Basically the same question above but with gold, how do I remove gold from copper without harming the copper?
I have a video that seems to have good information.
Employee - Ann Arbor, Michigan
A. Hi Ricky. We moved your posting from the "Stripping Silver" thread to one of our several threads about stripping gold -- the chemistries are really not that similar that we would want to homogenize them.
Luck & Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
Closely related Q&A's, oldest first:2004
Can anyone tell me if there is a safe and thorough means of removing gold from a coin? I have two 1972 Eisenhower Copper-nickel clad dollar coins that have been dipped in gold, and I would like to know if the gold can be removed without altering the grade/appearance of the coins original surface. This "Ike" is of the Type II Variety, for those fellow numismatists out there wondering why I would want bother with removing the gold layering.
I would appreciate any educated input.
Thank you,Paul S. [last name deleted for privacy by Editor]
Hobbyist - Winchester, California , United States of America
A. If you could find someone with a furnace that has good enough control you can melt it off, I'm guessing that the CuNi is alloyed, that should hopefully give you a leeway of about 100°C. I think you'd be better off finding a professional to remove it by other means though.
Gold melting point 1064.43°C
Copper melting point 1083.00°C
Nickel melting point 1453.00°C
- Elizabeth City, North Carolina
A. You can strip it electrolytically. 2% gold chloride solution in water must work. Current source =hobby drill transformer or even 4,5 V battery. Your coin must be connected to positive pole, and to negative pole piece of Stainless Steel (coin must be then immersed in solution). Good luck!Goran Budija
- Zagreb , Croatia
A. If there is any gold plating shop near you, just dip in gold stripping solution with less than 5 minute. Gold will be removed without any change on coin surface and be caution cyanide in stripper solution if you do it yourself.Pramot Pupanthong
- Bangkok, Thailand
April 21, 2016 -- this entry appended to this thread by editor in lieu of spawning a duplicative thread
Q. I am attempting to remove gold plating from a 1972 Eisenhower high relief dollar, which is required to restore the collectible value of the coin which is considerable; otherwise it's worth a buck.
Thank you for whatever help you can provide
Coin collector - Arlington Texas USA