1933: Balbo Flight, Hopflug red overprint on 1 kr. blue & brown, 5
kr. pale brown & blackish-blue and 10 kr. green & black, all in
unused
1933: Balbo Flight, Hopflug red overprint on 1 kr. blue & brown, 5
kr. pale brown & blackish-blue and 10 kr. green & black, all in
unused blocks of four of fresh vibrant colours, upper right
adhesive on 5 kr. with variety ""Dot over I of Italia instead of
Accent" (not mentioned on certificate), very fine and in superb
quality, full unmounted og. and extremely rare thus: only 4'000
full sets overprinted. Signed A. Diena and G. Bolaffi. Cert.
Gronlund (1968), Möller (2025) Facit 165/167 = SKR 218'000 / Mi = €
18'000
