Lot 40443 – 1924 Airs with surcharge in never hinged blocks 4

1924 Airs with surcharge in never hinged blocks 4 (a few gum irregularities) + single 10k on 5R in type II printing: wide ‘5’ and thick S.S.S.R inscription, never hinged example of this scarce stamp, cert. by Nikolai Mandrovski for the type II (Mi 267-270, 270II, €1’700+ , Standard 59-62, 60II, €3’000, Zverev & Gilmanov 60-64 €3’475, Liapin 161-164, H1)