RAF Banff Aircraft relic recovered
Hello everyone, I was hoping one or a number of you may assist myself and the being that found this nice relic whilst metal detecting up at RAF Banff. top serial is C3957, Bottom one C2973 but on the same side as that one a tiny circular stamp what looks to be D9 in the circle or B9 or even 60 upsidedown(?) any help would be appreciated by both of us. I think its an aircraft light(?) the glass is intact and you can see inside the piece itself.