1913 King William I, complete set used on registered cover from Maastricht (23.1.14) to Brussels, fine-v.f., with arrival pmk, most attractive and scarce complete set on cover (Cat No. 90-101) (Image)

Est.US$750

1913 10gld red, straw, two horizontal pairs (originally a block of four), canceled 21.III.14 Rotterdam and tied on piece, lower right stamp showing variety broken "E" in "Netherlands", fine-v.f., signed Buhler, with his 1989 certificate, cat. $2900 (Cat No. 101) (Image)

Cat. $2900, Est.US$1,500