Unusual OC White Lamp Parts:

• Nine inch (9”) arm, Aug.7,1911 patent date
• Stop Clamp. Limits rotation of arm to 90°
• Under Table Mount with 18” x 5/8” tube

The remaining parts are the typical Sept. 26, 93 patented knuckle, and 1/2” x 18” lamp tube with (brass?) mount.

Parts were gently washed with Simple Green and oiled.

I have never seen one of this type of mounts, and even though it is not marked I have no doubt it is an OEM part.