Before & After Pics - MS-70 Used On Impaired Proof Half

Woow that looks cool

Now with it in hand if you did not know it was, shell we say cleaned, can you see that you have used MS70



edit, mdp posted will I was typing, think I got my answer.

Condor,

Thanks for catching these mistakes. I wrote this hastily w/o double checking my comments.

When I stated baking soda I was actually thinking sodium hydroxide incorrectly without double-checking the product formulations/names carefully. Sodium bicarb, which has obviously always been baking soda still remains, however, safe to use on silverware and also safe to mix with water as I previously stated.

w/r/t to the NaOH (sodium hydroxide) and 'MS 70 Industrial Strength Coin Brightener' some of the comments I've heard and seen stated that it removed coin toning but also incorrectly referred to it as having NaOH: my mistake for not being more specific. I still would not use this product myself on any coin having significant toning.

But after having read the MSDS myself I do agree with you that NaOH in its original state does not exist anywhere on the sheet so 'possibly' those comments I found were referring to some reactive bi-products which I am not aware of these details. That's only speculation at this point and I personally do not have any data to back this statement up.

In summary I believe that my general recommendations are still valid but that the chemical compound symbols did not line up correctly with the ordinary common names of the chemicals all that well.

I do apologize for the confusion.

mdpmedia

@mdpmedia

Thanks for posting to remind people not to clean coins that are actually worth something. I forgot some people not familiar with the golden rule of "DON"T CLEAN COINS!" might read this and make a mistake.

I mentioned, on purpose, I knew it was only a .50 coin so I did not mind treating the coin, but I should have been a lot more specific.

@mcshilling:


There is no way this piece could ever again pass for a good proof since the surface is scratched, hence the small white lines remaining in the "After" pic. This is why I chose this piece to experiment.

However, after seeing the results on the proof, I was curious as to a normal clad half. I experimented on one of many nicer looking, still-decent-luster 71-P halves I found in a roll (a lot of these out there). I have to admit the 71 came looking very close to a brand new NIFC when side by side. I am not sure I could tell if it had been treated. All the chemical did was seem to remove the dirt. But I still would not use this to treat anything of value.

I admit I suspected NaOH or some other strong base as the primary ingredient since it leaves your skin (accidental - small amount!) feeling slippery like bases do. But I cannot find an ingredients list anywhere.

The bottle says to apply the liquid (I poured it on carefully) , let it sit just a second, and then rub (however, I rolled) a Q-tip lightly over the surface of the coins. This was enough to remove the unwanted stuff (except scratches of course).