322 Squadron of the Dutch Air Force.

I was browsing in the basement of Motor Books in London several years
ago, when an elderly chap with a Dutch accent asked me if I knew any
good Spitfire books. I picked up the Squadron/Signal book and showed it
to him. He opened it to page 34, pointed to this same photo and said
"Yes, I know the book, and that's my Spitfire".

--
Peter