my peroxide success

[whitesid]

i used the peroxide method to clean up an Indian head penny that i found, here are the results. i have the before and after pictures.

[OD_hunt]

Hey whiteid

I just got a coin from the East India Company and is dated 1835 and rusty, very similar to yours. It bronze or copper or something and almost unrecognizable. How does the peroxide process work? Just submerge? Strentgh, duration? Thanks a mil
OD

[hogge]

I found out by trial and error, that on Bronze IH's peroxide is not the way to go. Warm water and a soft toothbrush usually does pretty good. The peroxide seems to eat the bronze coating. I use peroxide all the time, but not on IH's.

[Tom_Restorer]

Hi whitesid,

to use a scalpel would be the better way!
Do you see the light green spots at the edges of the cleaned coin? This are (now working!) chlorides wich will destroy the coin within a short while.
Also the nice green patina is gone after cleaning the coin with peroxide.
How did you conserved the coin after cleaning?

I read so many threads here to use chemicals and stuff for cleaning bronzes or copper and be REALY scared...

Regards

Tom

[whitesid]

do you know where the chlorine is coming from? i usually don't preserve the coin any further after the peroxide i just wash it off and put it in a 2X2 sleeve.

[sniffer]

a good way for the peroxide method is, regular strength, put a small amount in a small glass, microwave until it boils,
than remove from the micro, place coin in it until it stops bubbling, rinse and enjoy.
this can be repeated, I personally do it 3 times and stop at that point

Sniffer