Dont mention it Michael 
 
 
It seems however that the more complex hilted katzbalgers existed even earlier than I (we? 

 ) thought. 
A fabulous painting done by Vittore CARPACCIO called 
" Portrait of a Knight " dated 1510  , shows a young man clad in complete harness (- the helmet) and armed with what appears to be a fully developed katzbalger. Note the "figure-8 or S-shaped guard" as well as the distinctive pommel more typical for the mid/later part of 16th century. 
Judging from the picture one could speculate that the weapon was also favoured among the men-at-arms/cream of the fighting nobility , not just the Knecht mercenaries.  
 
 
Take a look: 
 
Link to the source gallery : 
http://www.wga.hu/frames-e.html?/htm.../03knight.html
Best,
Samuel