Sweden 1989 Swedish Academy of Sciences (Polar Research) 19k80 booklet complete with first day cancels, SG SB419
Sweden 1989 Swedish Academy of Sciences (Polar Research) 19k80 booklet complete with first day cancels, SG SB419
Sweden 1989 Swedish Academy of Sciences (Polar Research) 19k80 booklet complete with first day cancels, SG SB419