General Questions On Acetoning A Coin

Okay, since this cleaning/acetone topic is back around, I have a question in a somewhat relevant vain... if this is not an appropriate post/topic, just delete it or whatever.

Anyway, I found a 10 karat(marked!) gold bracelet in a bathroom sink drain. It was just beyond the P-trap and, I thought, clinging to some other debris. Turns out it was kinda "welded" to the copper drain pipe. It took a bit of a tug to get it out. I soaked it in acetone (yup, nail polish remover and clearly marked acetone... please, lecture not required on the horrors of impure acetone ) for about an hour. It cleaned up rather nicely, except at the points where it was stuck to the copper pipe . So, being not a coin, I put some toothpaste on my thumb and forefinger and pulled the bracelet through... to see if the grey spots would polish off... then tried "Comet" (a scratch free bathroom cleanser... guess where I was ). Still no dice. So, I drew it through some kind of abrasive scouring pad (a green woolen kinda ball. I've used pads of similar stuff to sand wood between coats of varnish/poly). This worked great! The bracelet looks mighty fine now, but in between the links there's still that dark grey/black "stain". I figure it has been in that drain for several years to a decade.

I didn't bother with pictures because I doubt I'd get a shot between the tiny links that would be of any use. I don't know if these spots will wear off... the stuff seems rather hard to polish away and not all points inside the links would come in common contact. If wearing the thing, the discolouration inside the links would not be all that noticeable really, but can be seen easily if the bracelet is held up as one length. I won't go out and get an ultrasonic cleaner or anything... just wondering if there's some bathroom chemistry to finish the job.

Sap: Yes, it's lower than .500. It's a 1976 40% silver proof set. Both the half and quarter have a green oxidation spot.

The silver Bicentennials are not composed of the billon alloy(<.500 fineness) that Sap is referring to because they are silver clad. The outer clad layer is .800 with a .200 core.

Of course we all have opinions. My main concern with subjects of the usage of dangerous substances is the EXTREAME lack of precautions. By this I mean way to many just blurt out statements such as USE AMONIA. No safety precautions, not detailed instructions, no health cautions, just use amonia or nail polish or battery acid.
The sargastic and aggressive attitude is from many years of seeing people that no longer can SEE. People in hospitals, kids with burned limbs and all from some basic, non detailed instructions.
Teaching in a college you would expect less problems with an older age group but people are people and way to many just believe all on the internet as fact.
With something as simple as cleaning coins, everyone should realize that there are possibly even 8, 10, 12 year olds reading. Not to mention people in their 60's, 70's, etc.
Just My Opinion.

Just an observation. Some folks are just asking what works and what doesn't work. The 'Brillo pad' or similar comments are really of no use to anyone. It's really irritating to read a post where someone asks "how" and get bombarded with "you know I wouldn't do that" and never answer the specific question. You either "don't know" or you do know. Either way, that's all the poster is usually asking for. Some aren't interested in the opinions relative to what one should and wouldn't do. Some aren't only interested in the facts, without the judgmental overtone.

Having said all that...try lighter fluid. It works great and has no ill effects. It is especially good with copper (which is normally very difficult to "conserve")