I went to the antique store today found a wheat penny labeled mint error. Ive never seen anything like it. At first it looked like glue. I looked at it under my loupe and it reminded of a lave flow and at the bottom at the end of 0ne of the "flows" it seems the metal has been pushed up in a out line. Inside the 'flows" there are bumps or bubbles that seem to be a blueish color it was nasty looking I cant get a picture because i didnt buy it but im sure it will still be there if i end up wanting it
I would put money on it not being an error from what you are describing...was the "lava flow" attached to the rim?
if i remember right some of them were but the biggest one wasent i wasent sure thats why i didnt buy it didnt look like any thing ive seen before
that does seem plausible the onlyy thing i dont get is at the end of the main flow the coper metal is slightly raised maybe ill go by it for the hecks of it it was less then $1 i think
If he could see through it, it probably wasn't solder, but it could well be the effects of acid flux solder. I used rosin core solder to repair pc boards and amateur radio, and I used some cents in the late 60s to see if my iron was hot enough. Plumbers that used acid core solder could do the same. The old soldering irons were not sensor regulated for temperature like today Just a thought as a guess. PMD.