Detonator

[Investment]

Hello,

Could someone please let me know what the manufacturer's initials JBB and BB JB 2 (within a circle) on this No. 43 detonator represent?

Many thanks,

Invest

PS. I can't remember who originally posted this picture on the forum, hopefully it's alright to do so.

 

[BMG50]

Certain 2 inch mortar tail fins had JB in a circle logon ink stamped on them.

 

[Investment]

I just realised the picture was originally posted by forum member al'saad