I have a 5452310 Master cyl. supposedly original to the car that is missing the BS stamp on the pad. Did Delco miss some stamps or has it likely been replaced?
69 Z/28 Dover White X33,ZL2,PS,M20,Std.int.04C
67 SS/RS Mt. Green 1W,2LGSR,3SL,4K,5BY,07C
70 Nova L78 Blk. Cherry,Sandalwood,M21,02B