The three ROF Maltby rifles all have it. I know they've been inspected and cleaned prior to reserve storage but they strike me as pretty much factory original. I also have a ROF Fazakerley, ('43 date), that has been serviced, got a coat of paint and the stock cleaned in service post war. The matching serial number is present on the top of the wrist too but it's been scraped and sanded during post war servicing.
The Greek bluing is kind of a flat but dark blue/black finish. I have some 1903 Springfields that were returned from Greece by the CMPand they sport the same dark blue/black finish. Dulite is a much lighter shade of blue or more of a blue-grey over a sand blasted surface like Savage No.4 bodies.