Vintage chromium bike lamp ?

Something I found in a charity shop yesterday in a bag with what looks like a vintage partial box piece

Looks like it's never been used which is good, but insure if it's an unbranded one or not

Bicycle lamp ?

There's a H on the glass front, don't know if that's a makers mark or not

Any guesses at age ?

Any thoughts appreciated

 

H for Hella perhaps - vintage driving lamp add on, popular in the 60's

 

Thanks for the info ce b, very helpful, I'll look in that direction

 

i put my fog lamps on that way in the 70's.........
car lamp for sure..

 

Cool thanks buddy