Very interesting photo,
Royalistflier. The more I look at it the more I think that it is an RAAF uniform, not RAF - the shade of blue looks wrong for RAF. In addition to the mysterious eagle and crown, the chap appears to be wearing WW2 overseas service chevrons. I may be wrong but I dont think these were ever worn by RAF officers, or even if they were worn by RAF ORs, but I know they were worn by RAAF ORs at least.
Any Oz Mates help? I'm confused here