"William Glaze, gunmaker was located in Columbia, South Carolina at corner of Laurel and Lincoln streets, where he converted the Palmetto Iron Works into the Palmetto Armory. He produced 6000 model 1842 muskets, 1000 model 1841 rifles, 2000 model 1842 calvary pistols, 1000 heavy model 1840 calvary swords, 1000 artillery swords, and perhaps a small quantity of cannon. Sherman's troops burned the factory 17-19 Feb 1865, which was rebuilt with George Shields, Glaze's partner (doing businsess as Shields and Glaze), with new machinery purchased from the north. Glaze went bankrupt in 1868 and his assets were sold at a Sheriff's sales (source: "Carolina Gunsmiths, 1660-1870")

There is no evidence that Glaze did business in Charleston, South Carolina and I understand that Glaze lost his mental abilities and died possible in an insane asylum.

Maybe, whatever this gun you reference is, what fabricated from parts from obtained at the Sheriff's sale along with others. Is it a percussion gun or breech loading gun?