One has a pull-chain type off/on switch which doesn't seem to be working. I think you could remove the switch mechanism and plug up the small hole. The other one doesn't have this switch. Metal bases of fixtures are about 7 1/4 diameter.Metal is tarnished and has some white paint on it from when they repainted the ceiling. The metal base without the switch has an area between the top screws that has a dent. One of the opaque white glass shades has approximately 1 1/2 long chip on edge (see last 2 pictures). The other shade is just fine. The 2 main mounting holes are 6 1/4 inches apart.
I had my husband look at them & he said they will probably need an adapter or you can construct some wood framing to mount them to the electrical box. The item "Two 1900's Antique Vintage Ceiling Light Fixtures 9 Diameter Glass Shades" is in sale since Wednesday, January 6, 2021.This item is in the category "Antiques\Architectural & Garden\Chandeliers, Sconces & Lighting Fixtures". The seller is "lusterhaus" and is located in Springfield, Missouri. This item can be shipped to United States.