Don't know how to do pics but will describe best possible. Headstamp has a u 41 and v11. Box states:
50 cartridges/patrone
(cordite) (kordiet)
Solid pointed bullet
Koelpunte Onbeslaan
174 grains/grein
non fouling vuilwerend
Maunufactured by
vervaardig deur
The Mint Pretoria
Die munt
SONDER LAAIPLAATJIES

Anyone have an idea?