Hey John,
As I understand, the HK's were numbered sequentially through the entire 10,000+ contract.
Starting at # 1 and way past the # 13,xxx's. Numbers did not revert back to "zero" or "one" at each chamber date year; so letter suffices are not seen on HK's.
I think the 100 or so post war HK's assembled from parts started over again an "1" and went up.
Our Forum adminstrator, John Dunkle, has maintained a pretty detailed serial number list. Maybe John D. can tell us if this stolen gun is on his list...
Regards,
Pete... <img src="graemlins/yltype.gif" border="0" alt="[typing]" />