Lot 20140 -
Coamo Provisional. 1898, 5c black, type II, position 10, ample to large margins showing complete frame lines, good impression, used on envelope to Presidio, California (Potts correspondence), tied by "Military Sta.1/Porto Rico.Wash. D.C." duplex cancel, repeated adjacent, backstamped with New York, San Francisco and Presidio ds; one of only two Coamo covers known bearing the franking tied by a postmark, a key-gem of Puerto Rican philately; cert. PF (1992); Scott $27'500; ex Gallagher and Acevedo....
Currently US$ 19,000
(Link to this Lot in the Catalog for Bidding)