I Clean My Coins! - Page 2 - Coin Community Forum

To participate in the forum you must log in or register.

Author	Replies: 20 / Views: 4,207	Page: of 2

Ducat New Member Australia 9 Posts	Posted 05/09/2011 07:56 am I mainly collect world silver and gold. I find with 50% silver up to pure 999 if you must clean and I admit I do with cheaper bullion class coins I use tin foil in a dish boiling water to cover the coins and sprinkle Bi-Carb soda over them. They clean to a beautiful finish with the chemical reaction. No silver is lost, then rinse. No good for copper, bronze. Try with a cheap worn dirty silver coin. Report this Post to the Staff
drdave Pillar of the Community United States 721 Posts	Posted 05/09/2011 7:20 pm Ducat - This is a well-known method of cleaning silver that has been tarnished (silver sulfide). Aluminum (or tin) in electrical contact with the silver sulfide will remove the sulfide, leaving the silver behind. The baking soda is necessary to keep everything in electrical contact. The hot water speeds the electrochemical reaction up. What I'd like to know is, can you tell this has been cleaned under magnification? This is different than some other cleaning methods that remove the silver as well. Report this Post to the Staff
Dkillett Valued Member United States 140 Posts	Posted 05/14/2011 12:26 am One of the locals around here uses MS70, if I remember correctly, diluted with water. I know he told me it was not full strength. He basically uses it as a dip for silver coins. From what I have seen it works pretty well. I ordered some MS70. Gonna experiment with some crusty old junk 90% coins. Its junk silver, what can it hurt. Edited by Dkillett 05/14/2011 12:27 am Report this Post to the Staff
kc_hhsl New Member United States 25 Posts	Posted 05/15/2011 12:32 am I understand that one does not want to use and abrasive or a chemical that can have a reaction with the metal. Beyond that what is the issue with cleaning the coin. No you don't want to use wire brushes, sand paper, harsh chemicals -- but will a q-tip or cotton ball damage a coin? As far as chemicals -- acetone is pretty inert. Report this Post to the Staff
christian_cyclist Valued Member United States 284 Posts	Posted 05/15/2011 12:51 am I use q-tips but you have to be careful. It is possible to press a worn q-tip hard enough against the coin that the center stick which the cotton is wrapped on will scratch the coin. Ask me how I learned that lesson way back when! You can easily get swirl marks on the coin. Let the cotton fluff a bit and just let it glide over the surface. Most of the oils should dissolve pretty easy and all you're doing is agitating them off. Just think of the PSI the coin feels on the tiny tip of the center stick if you press too hard. It's like chewing food. Do you know how many PSI are exerted on your teeth? Yikes! -- Boris Report this Post to the Staff
	Replies: 20 / Views: 4,207	Page: of 2

First Page Last 15 Replies

To participate in the forum you must log in or register.

All Forums Category: General Numismatic Forums Forum: Main Coin Forum

The First Dollar, your premier source for bullion and rare coins. See our bullion list on the site and the coin inventory on ebay.

Silver Gold Bull US is the United States leading bullion dealer. We deliver gold coins, gold bars, silver coins, silver bars and precious metals to your door. Order today!

View Last 100 New Topics

View Last 100 Active Topics

Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Coin Community assumes no liability for errors. Copyright 2005 - 2026 Coin Community Family- all rights reserved worldwide. Use of any images or content on this website without prior written permission of Coin Community or the original lender is strictly prohibited.
Contact Us | Advertise Here | Privacy Policy / Terms of Use

Coin Community Forum

It took 0.26 seconds to rattle this change.