RN Trade Patch

[Leonard D]

Hello Chaps, can anyone please identify this patch.
Crown above 3 blade prop would be P/O Stoker but the patch in question has the 4 blade prop as seen in use with the Air Fitter branch. Does not show up in a search of ratings trade patches.
Any thoughts?
Thanks in advance.
Len.DSCF2098.jpg

[manchesters]

Len,

Its an Aircraft Mechanician, below 1st Class.

Worn from 1948.

regards

[Leonard D]

Hello Simon, appreciate your help. I was looking at WWII ratings not thinking it could be post war. Am I correct in assuming the crown on this patch does not indicate P/O rank?
Cheers.
Len.

[Leonard D]

Simon, a thought - for future reference is there an online or other publication that has illustrations of the post war RN rate patches.
Thanks.
Len.

[manchesters]

The badge denotes the trade and not the rank but it would normally be a senior member and therefore probably a P.O.

Badges & Insignia of the British Armed Services by May, Carmen & Tanner.

Badges & Insignia post WW2 by Guido Rosignoli.

regards

[Leonard D]

Simon, cheers for that.
Len.