DWM code on 9.3x62 cartridge

Earlier this year WBD posted date codes for DWM and included the KK code as K K = Karlsruher, WW1-WW2 factory codes used at 3 and 9 o’clock.

I’m confused as to how this applies to a sporting round like the 9.3x62 which I would not have expected to be manufactured during a world war.

Am I missing something here?

Any suggestions as to year of manufacture?

Thank you.

286 gr / 18.5g SNRN

They were made before y. 1925, because there are missing 2 small letters (V-G) around DWM, which indicate year of production.

Thank you THV