Jay,
from my understanding , and please correct me or jump in other collectors, f scott collected many ball cards as a teenager around 1910 or so....was a passion.....he grew up around midwest and apparently alot were epdg were distributed in that area....he stamped most of them with that iconic "F" ......among other ball cards....
his items were auctioned off in the 50's by his daughter after he died, type writters, desks, among other items were 1000 ball cards from his youth.....alot of t206....most stamped with that "f"
his cards pop up every now and then and can be identified by that "f" in black ink stamped on alot of t206....iv seen more epdg than the others, but i have seen sweet caps, piedy ect....they dont pop up often, and im afraid some "a" hole will try to start stamping epdg backs with the "f" in the future, thats why i grabbed one now and had it slabbed at this present time......they fly under the radar and collectors just arent aware of who actually owned them, just figure its another stamped t206....but these have a true provenance...and before they too go nuts one day in price i picked mine up in the $170.00 range.....which i feel is a bargain for sure....i wouldnt sell it anyway like any of my cards i have a sickness
picture f scotty as a youth admiring the cards we admire today

just goes to show how timeless the set actually is.....spans many generations...
so, show some