Mike, just to give you a bump, I am not an expert on these but the bottom one looks like a weak 'D' variety. The top one looks like a 22 no "D" weak reverse. My 2 cents (no pun intended)..............Rick
If don't look like UNC, it probrably isn't UNC.....U.S. Coast Guard. Chief Petty Officer (Retired) (1970-1990)
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