Spitfire ID

Dear Members,

First of all I would like to send my wishes for a Happy New Year full of Health, Happiness and Prosperity to all.
I am researching of the Spitfire History in RHAF service.
Recently the port aileron of a RHAF/336Sqn Spitfire possibly Mk.IX was found in the area inside an old barn house (aircrfat was shot down on 25/09/1947 and crash landed near the Village Homori Nafpactias, the pilot Flight Officer D. Soufrilas escaped with minor injuries, aircraft was operating from the Agrinio LG against Communists),
on the aileron there are two data plates on one of them are scribed the following:

TYPE
SERIAL No
W.B.Ltd /CBAF 8090 6
MOD 150, 319B

I believe the No 8090 is the aircraft construction Number allotted by the Manufacturer Castle Bromwich Aircraft Factory (see attached photos)
So can anyone tell to which S/N this Construction No. corresponds? It is known according to http://www.airhistory.org.uk/spitfire/production.html web site that c/n CBAF.8079 belongs to Spitfire Mk.IXLF MK805, and CBAF.8125 to Spitfire Mk.IXLF MK959 and further more the Hellenic AF Spitfire Mk.IXLF MJ755 has c/n CBAF.4484 (Data plate identical to the one shown here)
Thank you in advance for your time and concern to my query

Kind Regards
Yiannis
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IOANNIS MYLONAS
Hellenic AF Museum Technician
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Ex-Army Aviation
Aero-Engines / Quality Control
Technical Inspector
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Member of Air Britain AB 19752