Lot   Cat.#
576 **   2089A
1958, IGY, Aurora Borealis, 40k blue and light yellow, perforation L12 1/2 instead of comb 12x12 1/2, block of four, top left stamp has tiny natural inclusion, post office fresh and unfolded, full OG, NH, VF and extremely rare multiple, N. Mandrovski certificate, Scott #2089 var
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Part #2