Lamp - Opaline glass

Unique pendant lamp consisting of a white opaline glass globe with artistic motifs on a chrome fixture.
The whole is in good condition.
The glass around the opening has tiny chips along the edge that flake off under the fixture.
One of the screws was missing and has been replaced with a slightly smaller screw with a nut behind it; see the last two photos.
I cannot trace the lamp back to its origins, and therefore I cannot provide the exact provenance and year.