Question on shell markings

[jozefb2009]

Hello,

Does anybody know the meaning of the following markings on the attached shells?



- on the 37mm shell the meaning of the letters "Bd"
- on the 75mm shell the meaning of the letters "O.M."

Thanks,

Jf

 

[Yodamaster]

The 75mm case is a french case. OM must be Olympique de Marseille ! (joke)


Yoda