Pure Art Deco, around 1920, for ceiling decoration

This object was used for decoration, it looks like a ceiling lamp, but it is not one. With a glass insert, plants, very popular was ivy, could hang from the ceiling. But with a little skill, this Art Deco object can be transformed into a wonderful ceiling lamp. A beautiful piece of Art Deco with many possibilities.
Condition: very good. No damage to the glass or brass ring, chain or mounting, just the patina of age.
Dimensions: total height 85 cm, height of glass bowl with decorative ring 18 cm, width of glass bowl 28 cm.