COLOMBIA, 1921, "$030" on 50c Pale Green, Air Post Surcharge (Colomphil 9; Scott C23).
Vertical pair with sheet margin at right, violet "Sociedad Colombo Alemana de Transportes Aereos, Medellin" three-line handstamp applied upon arrival, large sealed vertical tear and heavy rubbing on bottom stamp causing hole, still Fine and rare, only nine used examples
are recorded, two of which are on cover and this is the only multiple
known, Scott Retail as singles
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