Where the vin number on 1960 Cadillac?

The engine number is the serial number, located on the right (passenger) side of the block below the head. It's also stamped on the top left-hand frame support next to the radiator support. The number takes the form 60F100001 - 60 is the model year, the letter is a code for the body style/model, and the remainder is the sequential production number.