A few things to consider:
1) I've soaked dozens of T206 cards in water and pressed them for days. Never had a wet sheet transfer.
2) I've purchased T206s that were actually permanently wet with some kind of disgusting chemical from a century on the floor of a basement. Those cards literally had blurred factory info on the back.
Any future experiment should be done with isoproyl, or peroxide, or bleach, etc.
Ever use fingernail polish remover on the front of a Topps card from the 1980s? It takes all the paint off the front, leaving behind an entirely blank front. I've never had the guts to do that to a T206 card.
Here's the before....
Here's the Chris Ford RARE T206 VARIATION!!