Yikes! That's a super '45.... Here are my two examples, neither of which hold a candle to that one! First, a N-10. Second an N-15.
Found another, 45 n12 die d with a cud from star 2 1/2 to 3 1/2, this is middle of the pack of about 20 known:
Good lord, be careful with acetone and copper! There are other solvents I'd use before acetone even if that was PVC.... In any event, I'm not sure what you're looking at, but the reverse spots looks like corrosion to me anyway -- the photos have a bit of a blue/green tint.
The pictures on the N4 look like when I was adjusting the exposure and did not get it right yet... I don't think it's PCV, and the coin had been cleaned with xylene.
I haven't had bad results with acetone on brown copper. Though I agree, Xylene is a good alternative. There's something about red copper and acetone. Maybe oils that deposit on the surface. In any case I'm glad it's just the images. I notice the green hue of the background now. Or maybe it's my mac...or old eyes. Lance.
Whew. Possible disaster averted! Moving on to '46... First, a halfway decent N-2 small date that ANACS graded AU 55: Second, a rough and raw N-11 medium date: I don't know that I own another purple large cent. lol Have fun...Mike
Nice 1846's, Mike! Here are small, medium and large letters. The medium is a cull with PMD and needs to be replaced. Lance.
The Buffalo has a slight margin on the large cent. No more support from those who cherish the large cent to bring her to victory?
Here's my 47. It's a low-end mint state example by TPG standards (NGC graded it 62 BN): Like most mint state examples of this series, the reverse has fared much better than the obverse. I wish it had a bit more eye appeal on the obverse, but the coin does have a lot of mint red for a BN example, and it appears to be a pretty solid 62 as well, I think. The obverse spot, IMO, is the grade limiting feature. Have fun...Mike