3 vintage oil cans, Copper, Pittsburgh Gem Mfg co. must see

This is a collection of 3 vintage oil cans; great for a vintage vignette in your home; they are in fair condition, one appears to be copper, one says Pittsburgh Gem MFG on it, the other is unmarked; some overall wear, please see pics for condition; I have another listed separately - happy to combine shipping. One measures 10 1/2" x 4 1/2", one is 6 1/2" x 4" and the copper one is 6" x 3 1/2". I have not opened or cleaned the inside of these.