Luke,
It looks like your Stahl Piedmont Factory 42 could have come from the
same sheet as this SGC example, they both have the same miscut.
Stahl PD 42 PSA.jpgStahl PD 42 PSA Back.jpg
Stahl PD 42.jpgStahl PD 42 Back.jpg
(P.S. I did start to collect some scans)