Plastic blank .303 Brittish

Can anybody confirm if this red plastic blank cartridge is produced in Norway?
see image: (no headstamp, small primer)

Is this cartridge produced in the 1970’s or earlier?



This round is Norwegian. See the previous thread of just a week or so ago about a similar 7.9 x 57 Bakellitefabrikken blank. I think it is contemporary to that one, for which we still have not received any comment from Norwegian viewers of the forum, to set a particular time-frame on these.