Box of 1942 British .303 in greek box interesting?

Found at this weekend's gun show, various 1942 head stamped (RG etc.) ammo possibly not original to box. Any member see this box before? Re-boxed in Greece post war? Just curious. Thanks, Don

https://www.milsurps.com/images/impo..._zps994a-1.jpg

I've come across wartime British stuff randomly mixed into the 1970s HXP stuff.