NKorea, that makes no sense to me. 1 - Wouldn't a dip remove anything acetone would remove, and then some ? Why even bother with acetone bath. 2 - If dipping does impart toning, wouldn't the millions of blast white morgans out there be black by now ? Anyway, the '58 quarter in question has had neither a bath or a dip or anything else.... It is very lusterful, which made it very hard to image,,, the toning pattern reminds me of the toning I have seen on a couple of cents I have:
Acetone removes residue, whereas a dip remove the toning. BTW, the word for a coin with a lot of luster is lustrous.
Yeah, but I'm pretty sure a dip would remove the residue as well... and the toning... and some metal to boot. I've always heard that acetone was for removal or organics,, and gentle. Where a dip is much harsher solvent (acid), that will remove pretty much everything that acetone would.. and again, then some more. Englash was not my strong suit.... ; )
Unless you know what you're doing, sort of. Then it's called conserving. http://www.cointalk.com/t205567/ http://www.cointalk.com/t140858/
To answer the first part, not exactly. I didn't wash the coins after the acetone. The process was: acetone, blue stuff, acetone, water. I posted the coins here when it happened. On another note... why not take the quarter out of the cardboard flip to photograph? That will cut down on reflection imparted by the flip itself. As for the copper/silver toning, that doesn't make a lot of sense to me. Tarnish and patina have different names, because, for right or wrong, they are different metals being changed. A silver quarter shouldn't have the same colors as a copper penny, for the simple reason that they aren't the same material/surface. In order for that to happen, either the quarter or penny had a change in surface composition... or the 10% copper REALLY reacted and the 90% silver didn't.
I've never used the stuff. But yes, some coins I'm sure it'll help if ya know what your doing, I don't LOL...Yes it's called conserving for coins that need it.