Two very pretty old single light ceiling fixtures made for pull-chain style switches, 1920s or 1930s vintage. These are heavy ironstone china, both Porcelier fixtures, in different styles. They measure 5 1/4" and 6" in diameter.
These are complete with the light sockets, though both need to be re-wired for safety. Both have some paint over the original painted under glaze china - a full coat of dirty white paint covers the one, just a few paint remains are on the other. The paint is easy to remove from the glazed pottery, it flakes off readily.