Some ID help on lead containers and collars

[mac1911]

I had these 2 "isotope" containers ( Thats what the person told me when they gave them to me ) I picked up a free tank with a small amount of fuel in it and decided to melt these down.

Any insight what they might be or possible Alloy content ? I will wait a few days to do a Bhn pencil test.

80 lbs



I also have these 50lb "collars" for 4 Had these tested Pb 96.27 Sb 2.73, they come right in at 11bhn tested as they sit?

[kevin c]

I haven't run across any isotope containers like those, though there seem to be quite a variety. The ones I've come across are all recent manufacture, and have mostly been 2.5 to 3.0% antimony without tin. Others are a very pure lead on analysis, and are obviously a different metal being heavier, dark, soft and dull on tapping.

I'm not sure the one with the larger hole is really an isotope container, seeing as it has an open bottom.

Never seen those collars before.