i know i should not have bought through ebay count it as lesson learned. I bought these on ebay as scrap pewter @ supposedly 97% tin melted them down and tried recasting them to smaller ingot to mix with other alloys. But when i melted them down they appeared to be mixed with what looked like zinc i kept the temp below zinc melting and skimmed all of the floaters in the attempt to get the zinc out, after several re melts i got all of the floaters and tried mixing with tin and pure lead to soften the mixture that was above 26 bhn but after i mixed them they ended up at about 19 bhn but came out frosty throughout the whole ingots see pics any thoughts? Still zinc or other contaminants? The temp. Was 700 F