Bidspirit auction | Worldwide Air Post Stamps and
Worldwide Air Post Stamps and Postal History - Greenland - 1932, Pigeon holding an Envelope over Icebergs, semi-official imperforate stamp of 10o dull red, designed by Rockwell Kent (not signed), nice and fresh, no gum as issued, VF and scarce, according to Jay Smith between 200 to 400 re-issued stamps were produced by Pynson Printers in NYC, only a fraction were signed by artist, Sanabria #S2, Est. $500-$600