Technical Differential Badge Emblem Plaque ID Help

Hello,
This was in a box of 30's to 60's car parts. Just wondering if is car related or for a auto display or what.Its heavy made. The black part is porcelain. Any help is greatly appreciated. Thanks

 

That should be mounted on the car somewhere. It indicates what you paid for your car or build and what you will get when you sell it. "Price Differential", mostly to the negative.

 

My books show Differential as the make of a car, but does not give a year made. I would consider that a HELL of a rare item!

 

I would say it is from the 1900-1919 era possibly.

 

Thanks for the replies. Hopefully be able to pinpoint exactly what it was on.

 

Maybe related: ?

http://www.coachbuilt.com/bui/d/differential/differential.htm
http://americanindustrialmining.com/differential-steel-car-company-locomotives

 

Thanks again. I've been searching on the internet for the past 45 minutes still no luck

 

From the Standard Catalog Of American Cars...probably a rail road car

 

Thanks for the replies. I found these brochures for trucks they made in 1931 and 1932. Couldn't find much more.

 

Well, there you go: obviously, it could only be from the prototype truck... .
Marcus...

 

Hello, I appreciate all the feedback from you guys. I thought it was a pretty interesting piece so I wanted to share it. I attached a couple more photos of stuff from online. Thanks, Ron