A surviving Stankovich 12kg bomb in the Nederlands?

[Dreamk]

This is puzzling - among the photographic archives of the Nederlands Instituut voor Militaire Historie, I found this picture under the following reference:
Name: Instructional material for the knowledge and recognition of explosives for the training of divers. A bomb.
Object number: 0075-039-028-24
Manufacturer: Marine Electronic and Optical Business (MEOB)
Place: Den Oever, North Holland, Netherlands
Collection: Marine Electronic and Optical Business (MEOB)

This is the picture and ...it looks strongly similar to the 12kg Stankovic bomb (the ribs on the fins are quite characteristic of Stankovic/Vistad production, also seen on larger bombs)



Here's a drawing of the Stankovic 12kg from the 1941 "Notice des bombes d'Aviation" and another one form Henry Belot's Deminest:


The 12kg Stankovic bomb was widely used by the French in May1940 and large stocks of these bombs were captured by the Italians in Yugoslavia in 1941.
Interestingly, the photographs of these bombs captured in Mostar show a body shape almost closer to the one on the above Dutch photograph but do not show the characteristic ribbing on the fins:

The photographs of stocks captured in Castelnuovo-Tedesco do not enable to appreciate the shape of the fins:



What do you think?

 

[pzgr40]

The awnser may be not that difficult; after their european campain in 1940, the Germans used all captured ammunition they could find. If they were small batches, either weapons they thougt to be obsolete, they were often used for coastal defence, either transferred to mines.
As I live in the coastal area of Holland I can tell you from youth experience that we found ammo from all over europe in the dunes, often stuff even pre WW1.
And as France and the Netherlands are not far apart, lots of French ammo was found here.