Ford Sign

[34hardhead]

I am trying to identify a FORD sign, and pin point its era.
the sign has a yellow background, with ford script in blue, and a blue border. it is about 3-4 feet long and about 2-3 feet tall, rectangular.
I have never seen one like it, it could be very old?
it is porcelain, one sided

 

[34hardhead]

here is a picture, any info will help

 

[petehoovie]

I'm thinking it is unique to Ford Tractors....

 

[rotorwrench]

I was thinking the same thing. Ford industrials were Yellow & Blue beginning in the late 50s or early 60s somewhere.