what is this amp gauge from?

what is this amp gauge from?

 

The JC Whitney catalog? Western Auto?

I give up....

 

one after market item

 

Why would you want an AMP gauge.

 

looked in warshawskys, whitney, noahs ark, almquist, western auto, newhouse, honest charlie - all old issues from the 50-60's and saw NONE that look like this - probably some obscure company as they look like a cheap gauge from the 50-60 era.

 

I'd say late '60's/ early 70's, aftermarket for sure.