Please date RWS .22LR box

one of my friends just got this box of .22LR made by RWS
what is the year of manufacture, judging by the stamps on the carton?

The top label says 1943, lot 32, sublot C.
The date part “N68Q” of the bottom stamp is in agreement: N = 1943 and 68Q is 28th July.
I have no information what the other figures in the bottom stamp stand for.