Question on shell markings

[jozefb2009]

Hello,

Could anybody help me to identify the following shell markings please?

1) 3Pdr shell which measures 47mm by 376mm. Can anybody tell me the meaning of the letters CRB in the rectangle and the letters DW in the diamant. See picture below



2) 40mm by 311m shell. Does anybody know the meaning of the round symbol with the letters M W ? see picture below.



3) 18 Pdr shell measuring 84mm by 295mm. Does anybody know the meaning of the letters M X B ?




Thanks,

Jef

 

[TimG]

Jef,

The CRB in the rectangle is the mark of a repair facility - denoted by the monogram enclosed by a rectangle - I am unaware as to the ID of CRB

DW - An Inspector's mark

MXB - The significance of these three letter strings is alluding me. They are incremental with the date and only appear on cases made in North America - especially those made by the Canadian Cartridge Company.

Regards

TimG