Some sort of aircraft tag??

[Darren]

Can anyone offer any info on this aluminium aircraft tag? It was amongst a bulk lot i got last year.

What sort of aircraft is it from? Where in the aircraft would it have been?

 

[NickW]

Have got one or two of these somewhere - mounted on the inside of the radio hatch on a Spitfire IIRC - may take me a while to find them though! Probably similar plates on other aircraft - centre of gravity would be easily upset on a single seat fighter and radios where heavy lumps in those days, so was an important consideration.