GUAM, 1899, 5c Blue (5). Used with 1c Green and 2c Carmine (1, 2), tied by blue "SAN LUIS D'APRA, GUAM, DEC. 13, 1899" two-line datestamp and matching geometrics on cover to Altoona Penn., Manila and receiving backstamps, few toned perfs on 1c, Very Fine and colorful use