1903, 15¢ Olive Green, in combination with 1903, 13¢ blackish violet on 1904 registered corner card cover to Singapore, East Indies, tied by oval handstamps with purple "Registered, Bourse, Philadelphia, Pa., Jan 9, 1904" straight line postmark, N.Y. registry etiquette and receiving backstamp; 15¢ with minor surface scrape and cover reduced at left, otherwise Very Fine, a very scarce destination and usage; with 2003 P.F. certificate. Scott No. 309+308  Estimate $200 - 300. $0 (Image)

1903, 15¢ Olive Green, left margin single with part imprint, o.g., barest trace of hinge, exceptionally large, perfectly balanced margins, deep rich color, an Extremely Fine gem; with 2013 P.F. certificate. Scott No. 309  $180. $0 (Image)

1903, 15¢ Olive Green, bottom margin block of 4 with part imprint, o.g., never hinged, well centered and wide margins throughout, fresh with deep intense color, Extremely Fine and choice, A Stunning Gem Block; with 2012 P.F. certificate. Scott No. 309  $1,900 for singles. $0 (Image)