Fake ID tags ?

[FireMedals]

Item 3

[JoeW]

This disc design was identified as in use by the city police of Pforzheim from 1953-1959. before the state police assumed Kripo responsibilities. The disc was reproduced a number of years ago but that repro design differs from yours in a couple of points. It is possible that yours is original, but a final determination is really impossible from photos.