I have looked and looked at that date code from every angle and with different type light and I couldn't make anythign but a u out of it. I also thought μ(mu) but can not pull that out of the date code. It would support Adolphe Delcommune mark being there, that is for sure.
I have a greater concern with the u mark. 1942 in Belgium? That was during height of the Nazi occupation...was it business as usual? Would gunsmiths have just gone about there business building sporting arms?
Then there is the question of what brought this rifle to South Africa?
Oh if only it could talk.