note from archive, 5.06.1935 / SEPEWE
"...Test in 1933 in Yugoslavia in Bela Crkva [soft area] and in Mostar [hard terrain] 1000 bombes (i do not see info about types) with fuzes, the fuses worked well and only one bad work. Fragmentation of shell not ideal - big pieces of shell. Tested all 1000 bombs....."
from W. Mazur / M.Deszczyński, based on two archives:
...from 1933 - 1000 bombes 12 kg...
from one other book text made by constructor F.J. Pogonowski, maybe with mistake (12 kg / 100 kg), in short:
"....my fuze patented and used for exporting bombs abroad...
Yugoslavia has announced a fuze competition: Skoda, Bofors, one Yugoslavian company and PWU from PL with my fuze [constr. by Pogonowski], Test in Yugoslavia took place on the training ground in Bela Crkva and in training ground in Mostar. Poland achieved an unrivaled victory, Yugoslavia ordered a batch of 100 kg of bombs with my fuses.
The order was carried out quickly and efficiently by the Ammunition Factory No. 1 in Skarżysko, to the great satisfaction of the Yugoslav side, which we thanked for providing technical documentation regarding the product of this fuse."
If i found more info will write.