Posted By:
MVSNYCgreat question Jim, and glad to see you post...
my guess is that the few that own, let's say an old mill double overprint, brown old mill, brown lenox, etc...will of course fully endorse and defend their prized rarity (i probbably would to, if i owned them)...and the majority of us who do not own these super rare/almost freak variations, are more likely to dismiss and not accept these cards as true variations. just simple human nature.
with all that said...i originally thought that the brown Lenox/Old Mill backs were just faded black, but after seeing one in person and comparing scans side-by-side, i am starting to believe (not 100% yet) that it is legit.