Hello, I found the wrench at the top at the flea today, it has in raised figures 16 in LECTROLITE DEFIANCE OHIO A . The wrench at bottom is from my personal tools, and has in raised figures 16 in S-K TOOLS A M. Both have 16 in FORGED ALLOY IN USA on the flip side. As far as I can tell they are identical, except for the A and A M markings. Are there a lot of these Lectrolite Adjustables around? First one I have come across. Regards, Lou