My assumption based on the 1939 specs is that "C/S" indicates "Chrome / Silver" so standard civvy spec.
Purchases in August suggest that they were planned. Germany didn't march into Poland until 1st September.
Hi Rik, sorry, my mistake, "CS" is specified for all the KB bikes sent to the war office, the style of handwriting makes it look more like CP, which I was taking to indicate Chrome Plate.
just as an aside, around 80 KB machines were sent to Warsaw earlier in 1939, no doubt the Germans found them quite useful.
