This ingot is one of a bunch I bought from Hall Mark Metals (who also sell on eBay, see source link). These ingots are intended to be melted down for casting or alloying. Lead is pretty cheap, but the shipping will kill you! It cost almost as much to ship them as for the metal itself.
Source: eBay seller hallmarkmetals
Contributor: Theodore Gray
Acquired: 10 April, 2004