32 ford pickup radiator cap

I have a original 32 ford pickup radiator cap in good condition what is it worth

 

how do you know its "original"?

photo............

 

Because it is on my original 32 commercial grill and radiator

 

$10

 

Pictures please

 

Is your cap approximately 3 1/2” diameter?

 

If you can post some pictures of it and a measurement of the diameter, that would be great. I have one to compare it to.
The prices can be all over for a real deal commercial 32 rad cap.