I agree that it doesn’t really look like a helicopter rotor-blade, certainly not with the additional photographs, but it was the aluminium honeycomb that made me first think it could be; I have a small section of US (Huey?) blade that has a honeycomb core.

If I’m being perfectly honest with everyone, the first time I picked it up and felt the weight and the shape I said it feels like a rotor blade with the leading edge sheared off. but I then thought nah it would be a HUGE rotor blade. so left it.

I did some cryllic translating and think the word on the top is Blade, but I could be wrong, I think someone in 2004 had a similar idea as well. more photo’s to go up as they upload.

Ok further research has thrown up the possiblilty that it isn’t blade but propellor. obviously this piece doesn’t look anything like a propellor blade, so part of the structure nearby one ?

That means it would read Propellor no.2 855300-7272P (P being R in Russian or cryllic script)