WW2 Free Norwegian Forces 1944 hallmarked silver cap badge??

[Shots Dave]

Hi Guys

I have just obtained this cap badge which I believe has the markings for J R Gaunt & Son and  Birmingham 1944 . I can't see any similar cap badges with this style of pin attachment, is it authentic?

Cheers

Dave

[Bayern]

Its a Free Norwegian army beret badge , existed another cap badge for the peaked cap also used by Norwegians in Great Britain . it consisted in a round centre with the Norway Lion surrounde by Oakleaves garland and topped with a Royal Crown also in white metal