Hello and help tracking a downed BF109

[Badboybez]

Firstly hello and thanks for enabling my account.

I have a query about a downed BF109 - a little background history!

When I was about 10 or so (1980) I used to spend time at my grandparents and their next door neighbour whom I always called Uncle - but was not a relative - used to talk to me about his days in the Fire Service in the War.
He gave me a few things and I've recently come across them.
Sadly my 'Uncle' is now deceased.

The story was that he dealt with a downed German plane during the war and he was given the pilots ring by the pilot who survived.

So hopefully if I've done this right there should be some photographs below.

Firstly his NFS cloth badge. Which looking at the NFS records Number 16 Company were based in Lyndhurst Hampshire


Second is the number of the plane that he took off the aircraft. Apologies if the photo isn't sharp.

I can make out the following: BF109 E WerkNr. 751 (This looks incomplete)
Baujahr 39



And third image is of the ring. It's either bone or Mother Of Pearl (i think)


So would like to know if the pilot did survive as he said and if it is at all possible for me to research into the pilots family.

Thank you in advance