I have this Piedmont 350 Matty McIntyre with a split back
Matty McIntyre.jpg
notice one of the split backs has an odd print flaw, when I saw it I recognized the flaw.
Scot Reader started a thread several years ago about this particular
flaw here's the thread scot started.
https://www.net54baseball.com/showthread.php?t=189642
I also picked up a Killian with that flaw to go with the McIntyre.
McCintyre-Killian.jpg
McCintyre-Killian Back.jpg