Help with Belgian 81mm proj.

[MINENAZ16]

Hello,

I have this picture of a Belgian 81mm mortar projectile but I can't read designation Nr...
Need help for the nomenclature and diagram.

Regards

 

[Yodamaster]

Probably NR520, ARMY TM | D-4-2-6


Yoda

 

[MINENAZ16]

Hi Yoda,

Nr520 and Nr436 have a different shape.

Cheers