The reflection makes it look worse than it really is. There are two inclusions coming out from the brass collar. It's been that way for almost 125 years. A couple of black specks in the clear glass stem and maybe a straw mark or two.
Only the chip was not made in-the-making. The item "ANTIQUE RARE YELLOW CASED PRINCE EDWARD KEROSENE OIL LAMP CONSOLIDATED 1890'S" is in sale since Sunday, January 5, 2020. This item is in the category "Collectibles\Lamps, Lighting\Lamps\ Non-Electric\Kerosene". The seller is "ilfp" and is located in Fostoria, Ohio. This item can be shipped to United States.