(If you are wondering why the code on this mask isn't JOP-SW, it's because the two wire masks weren't introduced until 1980, so there was no need to distinguish single wire, because they were all single wire!).
VINTAGE 80'S PITT MUSTARD SCHUTT JOP GREEN DOT FOOTBALL HELMET FACEMASK - MARINO
VINTAGE 80'S SCHUTT JOP-SW RED DOT FOOTBALL HELMET FACEMASK - BEARS BLUE!!!
VINTAGE 80'S SCHUTT JOP-SW RED DOT FOOTBALL HELMET FACEMASK - Black!!!
VINTAGE TITANIUM SCHUTT TRJOP-DW BLACK FOOTBALL HELMET FACEMASK
VINTAGE #F1543 WILSON Official Youth League Football Indestructo O J SIMPSON 70s
Vintage Wilson THE DUKE NFL Football 70s Official Made In USA Needs Bladder