Ok... So what's your guess? If you know what it is please post it and let us know how it was used... It was a bit unclear when I went back to the person I bought it from.
Thanks.
Sorry, I didnt want to ruin the fun.
They are still usefull, when you pull a tee in copper. And copper gets really soft when brazed, type m moves like lead sheet. A smooth iron pushes it back in place.
Besides pipe it was used a lot at fittings. Many of which could be made from sheet. For pipe re-rounding a swage makes short work.
I think that a lead soil pipe craftsman would be almost impossible to find. I can only imagine that their life expectancy was less than most.