Sgt Trevor oldfield NO92Sq
 

Hi can anybody help with the confirmation of unit code for Sgt Trevor Oldfield's Spitfire lost on 27.9.40 a/c coded R6622 of No92Sq.

Aviation artist Geoff Nutkins has a painting of this a/c entitled " Local Hero" depicting this a/c as coded QJ-M available at the Shoreham Aviation Museum.
Can anybody confirm these markings?

Best regs,
Steve.