For parts or repair. Three vintage watches Alweco-17 Jewels-not sure if the back cover is the correct one. Cimier De Lux- i don't know how to remove the back-ill leave it up to somebody that knows what their doing. And I'm not sure what kind the square looking one is. Maybe someone that's more knowledgeable w watches will know from the back. Mechanically it's a nice looking watch. But the front will need some tlc. All 3 are missing front glass cover. please refer to all the pictures for visual detail as they are considered part of the description as well. Thanks for looking...