Mystery Marker Light

Does anyone have any ideas what this is off of? It has a gl*** lens that is pretty thick. It has almost the same curve as the rear fender on my bike

 

Add on accessory light. Heres 3 more http://www.ebay.com/itm/3-LOT-NOS-V...m-Bike-Cab-Fender-Marker-Lights-/230989297169

 

ELECTROLINE-N4- This guy has several, much cheaper. http://www.taillightking.com/Truck Clearance Lights.htm

 

Thanks, I realize it's an accessory light, guess I should've been more specific. I'm trying to see if anyone can tell if it came off of anything specific ie: Diamond-T, school bus, boat, Buck Roger's spaceship . .

 

Vintage Pep Boys, or Western Auto.

4TTRUK