I cast this in the early 90's. It was an extremely limited run and this is my last piece. Exceedingly well made - antique silver plate - vintage Egyptian revival glass glazed old german cab discovered in Providence - circa 1920 - 1940. It measures 5.25 inches on the inside with a flexible ruler. Currently the opening on the cuff is 1 & 1/8 inches across. The metal is flexible but not by much. The glass cab is 1.5 inches long. Mint condition - NBW. I do have another piece in a blue cab as well.