Thanks for the reply. Yes I do plan to sell it, but the only info I found was on ebay from 2015 the center tube which is brass sold for 300. The outside is copper and the top is copper and brass. It is 8" dia. My father worked in a brass mill since the 60's and they were shipped in to be melted down. He saved this one and I have had it for years just moving it around. There is very little info online about these but yes they were and this style is still used by USWB.