I cannot find my camera so i cannot post a pic right now, but I need your help. I almost ruined a tsuba through love and care.... The tsuba was grimy along with the other grimy fittings that came in on a dilapadated tachi. The tsuba was large and round and looked to be made of shinchu. Well there was a lot of old muck in the detail crevices so i gently washed it with soap and water and it lightened up a bit. I then took to a paper towel to dry it and gave it a vigorous rub and a lot of black came off on the towel, so i figured I should leave it alone. Except the little bamboo and flag/mop looking thing needed some "Q" tip action to get the black chunks off. Well after a minute it looked good and had a li'l shine to it and some "highlighting"... hrmmm looks like copper thats weird..... eeeerrrr hit the breaks. A brass tsuba should not be copper so out came the microscope and the loupe... son of a gun it appears to be a copper tsuba that was carved then gold and/or brass overlayed.
Common technique?
schools?