Thanks to everybody for the responses and photo's. Looks like i am getting closer to finding a aussie .303 12MAG box. There is no listing of FGK in skennertons british makers identification list. The closest one on the list is S328 Frazer&Glass Ltd, so it looks likely to be FGK is either canadian or aussie. A hunch says the inspectors crown S mark is aussie. Anyway the good news is if FGK turns out to be aussie i have seen them on the show scene and i won't be looking for anything resembling hens teeth or rocking horse droppings. Thanks again to everybody.keep it coming in!