I believe that all the SA Marvel Annuals, up to what year I am not certain,were printed like that in Canada.I know my ASM Annual1,FF Annuals 1,2,and three are as you described,as well as my Marvel Tales1 and Marvel Superheroes 1.As for scarcity,I am not sure.Being in Canada I thought it was the norm until I recieved a second "American" copy of ASM Annual 1.I will double check,but I believe there is a Canadian ed.of Daredevil King Size 1 too.Back now..seems my Strange Tales Annual1 is like described above as well.Did not now about that one!
Jimmers