There was a cartridge counter luger that traded hands at the recent Reno show as well.
One LF member took a digital photo...and comments by another that saw the gun (or photo) commented that the number-indicator's color was "too white" and should be more yellow...
Gun was headed to the NC area...
Another LF member commented at Reno that he had the chance, in the past, to see two (2) cartridge counter lugers at the same time...both with the same serial number...curious...