tiny crystal shade ceiling light w/ ornate silver plate fixture, 20s 30s vintage

We love this antique electric ceiling light with it's worn silver plated fixture and tiny crystal dome shade... we thought this piece was a Edwardian butter dish when we first saw it!

It's a flush mount ceiling fixture about 7" x 7" overall, made to hold a single light bulb. The glass shade looks excellent, and the wiring looks original.