Panama, 1903-04, 20c red brown on blue, 3rd Colon Overprint, blue "2112" handstamp, used with Colombia 10c blue with 4th Colon Overprint, Panama 20c violet with 3rd Colon Overprint, tied by purple flag cancel duplexed with "Colon, 26 Abr 1904" cds on cover to San Francisco Cal., New York (5.3) backstamp; reduced slightly at right, Very Fine. Scott No. Panama F17 + 135, Colombia H3 var.  Estimate $200 - 300. $0 (Image)

Panama, 1903-04, 20c red brown on blue, 3rd Colon Overprint, blue "2892" handstamp, used with 5c blue with A.R. purple handstamp, 10c yellow with 4th Panama Overprint, tied by "Colon, 1 Jun 1904" duplex with fancy flag cancel on cover to Boston Mass., printed blue U.S. Treasury Dept. corner card; light toning, minor filing hole at left, F.-V.F. Scott No. Panama F17 + 78 w/A.R., 79  Estimate $150 - 200. $0 (Image)