I have two of these ingot bars that I bought in a lot purchase off of Ebay about 15 years ago. The lot was advertised as soft plumbers lead, but these bars seem to be quite a bit harder than pure lead. I don't have any kind of hardness tester, so I don't know much harder. Google hasn't turned up anything that looks even close. Each bar weighs 4 lbs. 2.2oz. ea. Says National Lead Co. on top, Metal on the bottom, and in a recessed area in the middle it says "Genuine" that is upside down from the other two lines. There is also the Dutch boy on one end of it. The only other markings on the bars are a stamp on the back that reads "U82C4 R"
One of these days I may get around to picking up a hardness tester, but haven't had much of a need for one as of yet. Also, I may never get around to using these in making bullets because of having plenty of other hardening options, but just out of curiosity, I'd like to know what I have.
I'm going to attempt to post pictures from my photobucket account, but I'm not expecting it to work, which is the reasoning for the detailed description.
Thanks,