I cast some bullets for my brother and in return he gave me two bars with this mark on the back.
Sn60BS Just out of curiosity is that 60% Tin 40% lead? On the front it has VACULOY SOLDER. He got these
from an older gentleman that was cleaning out his reloading room, his score was a bunch more than these 2 bars.
But when you trade bullets for what ever you can get, it is better than nothing.
Most of what I saw on the internet was a 63/37 tin to lead alloy.