Mega Greaser Or Something Else?

I agree with CEO, something just doesn't look right for it to be a grease job.

I don't think a Zincoln would hold up under a torch. The copper plating would just burn. I'm think a Struck Through Grease.

If this was done with heat/a blowtorch, wouldn't the rim also be damaged? It's intact. That's what made me think this was done during the minting process.

What made me question whether this was created with a grease-filled die was the irregular, rough surface of the damaged area. Normally, doesn't a Greaser leave a pretty smooth surface? The surface here is irregular and pitted (those aren't bubbles but holes). That's when I began to wonder if the damage was caused by something else.

Grease. Yes, with a torch or heat you can get the inner zinc core to melt (about 800 degrees) but that would not cause the lettering to flatten out. The copper shell would retain their shape. So how do you smooth out the surface again? The striking of the coin has stretched the copper into its new shape which increases its surface area. You can't just compress it back down into a smaller area. And if you heat the coin too much or keep the core liquid too long it will dissolve the copper shell. A Grease Fill of the die will give the result of the missing details seen on this coin. The coloring could easily have come later.

If the copper is intact, it is probably a Struck Through (Grease) Filled Die. I would agree that heat couldn't arbitrarily flatten out design elements. Besides, I have seen a heated Lincoln Cent and the zinc gets wavy and the copper will split in sections.