To be honest I think that the clock wasn't installed in Hamtramck, but at the local dealer in Autstria (Tarbuk), ' cause the clock is as old as the car and it was installed very professional. This particular Barracuda was a special order car and so I think that the first owner wanted a clock in his car (typical for Austria). So the Dealer installed the watch in the glove compartment after consultation with Chrysler, 'cause they didn't install the clock at the assembly line. So maybe they printed the digit at clock as a dealer option.