[Kens 36]

These vehicles did not have a VIN, per se. They had a serial number. On a 1950 Ford, the serial number should appear stamped on a metal plate and on the frame on the passenger side, possibly on the strap attached to the cross member. The S/N will have the form B0CH###### assuming the vehicle was a V-8.

The number you are seeing is the "cowl code" which has much more information.
CH = Chicago assembly plant
70A = Deluxe Tudor Sedan
B = color code of Bimini Blue
A = upholstery code - Deluxe Mohair, gray stripe
25K = day/month assembled - 25th of November (I think)
32 = the 32nd vehicle assembled at the Chicago plant that day.

Ken