Hello,
In reference to the 'Three moons' motif mark found on blade of 16th century Katzbalger : as mentioned previously, such an IDENTICAL 'three moons' motif is found on German coat-of-arms (see third quarter) of Sachsen-Lauenburg, indicating an actual german origin of such motif, rather than african or so (as suggested in some posts). I will search in other german cities coat-of-arms too.
jm