Have some mystery ingots. The small ones between the muffin ingots here. I think the shiny ones on the right are foundry type or something like that. Not sure about the others guess I'll have to invest in a hardness tester or just mix them 50/50 with something hard.
Then from the back I have these 4 block strips that appear to come from a commercial supplier. There're quite soft as I'm able to dent them significantly beating them on the concrete floor. I'm thinking they're pure lead.
Here's a couple other pics from today's big melt and organize. I got a small supply of lead pipe. The misc are a mix of fishing sinkers and range scrap:
Here's the whole stash: