@bobIN
Unfortunately, I don't recognize any of the features (construction, shape, marking scheme on shank, etc), which are not distinctive enough to ID the OEM. I don't recognize the part number, either. That can often be used to ID an OEM for a wrench made third party for a retailer (e.g., Western Auto, etc). In this case, it might be particular to Chrysler Motor Parts Corporation.
What are the sizes on the other one you have? As you probably know, it's an ignition wrench in a configuration that was fairly standard by the 1940's, although I think your chromed wrench is probably 50's. The range was typically 15/64" to 1/2", but every opening was given both of the angles (15* x 60*), meaning, they came in pairs. Your 15/64" (60*) x 13/64" (15*) has a 15/64" (15*) x 13/64" (60*) brother. The other pairs in a typical set were 7/32" x 1/4", 9/32" x 5/16", 11/32" x 3/8", and a solo 7/16" (15*) x 1/2" (60*).