V-C platform & repair/reproof in 1941. Post an image of the marks forward on the tubes. Worry not about your English.
Cheers,
Raimey
rse
Just to expand Raimey's message a bit:
V-C platform is Verney-Carron, I think. Well-known French company.
There are French proof marks, of which I am no expert.
Raimey will know more.
Further German proof marks from July 1941 (741), J with eagle - Instandsetzungsbeschuss / repair proof, another one I do not recognize, then caliber markings 17,0 and 17,1 - 16 gauge, and 65 mm shell length.