Looking forward to seeing what the coin will come out looking like. The pitting or roughness on some old copper coins is very common.
After another very long soak and toothpick method. I'm pretty sure it won't get much better than this. Still, worlds of difference!
Good idea to stop, it's not going to get any better. All that's left is the heavy stuff. Let it dry, put it into an airtite and call it a day. I'd probably let it dry for a week (both sides exposed), that was a deep soaking. CONGRATS!
Can you explain this a little more. Specifically what bad results can occur if you use xylol after VC?