Toms49Panel,
that would be a difficult item to find, I would think. I think that there would have been different types of radios depending on the location. I know that Motorola was a big player in the radio industry, especially after WWII. I wouldn't be surprised if they made police radios back then. You might try asking this question on the VCCA site. Actually there is an expert on Chevy radios who can be found on the VCCA site and his name is Ray Holland. Another source of information might be a site dedicated to the ham radio interests. They usually know a lot about what is happening in the various bands and possibly the history of equipment.
Fred