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					Originally Posted by andybecker  Hi Nate,
 I believe those are all s74-1 with the backing removed.
 
 s74-1 came in black (can look dark brown), maroon, and blue front colors.
 
 s74-2 have the factory on the front and were not issued attached to cardboard.
 
 best regards,
 andy
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 +1  
....-1s had cardboard backs and NO mfg/factory or brand on the fronts.
....-2s had mfg and brand on front and no cardboard backs.
(and thanks again Andy, for many of these)