Vintage R&M Robbins & Myers? Electric Ceiling Fan "EGG" Coupler Antique

Description

Vintage Robbins & Myers? R&M Electric Ceiling Fan "EGG" Coupler Antique
Egg coupler for antique ceiling fans
Possibly for Robbins & Myers??
In used condition with old paint, soil, dents and oxidation
See images for measurements
Comes with what is shown
Please see all images for a pictorial description and ask any questions. Thank you for looking!
BIN-D B-1