Not sure on the term fourfold there Axel, but do you mean threefold per the triple proof on the unfinished tubes?
Exactly. Triple = 3x bp provisional proof + 1x final smokeless proof was advertised as vierfach = 4x proofed in Germany.
I understand now what position the reference, Vierfach/Ctyrnasobne, holds in the advertising:
Amtlich Vierfach Geprüft und Eingeschossen mit Stärkster ladung Rauchlosen Pulvers.
Czech version - Uredne Ctyrnasobne Zkousena a Nastrelena Nejsilnejsim Nabojem Bezdımného Prachu
An example may exist with the advertising verbiage & associated proofmarks, but I am unable to locate an example with the advertising verbiage that wears what would be considered the associated proofmarks. There just doesn't seem to be any proof in the pudding between the advertising and the stamps. I'll keep looking and maybe some of the Belgian authorities can chime in.
Kind Regards,
Raimey
rse
