1898-99 10pa on 24a lilac & blue, Surcharged in Roman Letters, used with neatly-struck c.d.s., nicely-centered, negligible blunt perf at right, an attractive and scarce stamp, very fine. (Sc. 64, $750) (Image)

Est. $200-300

1899 1a dull green to 10a carmine & green, hinged, bright colors, fresh and well-centered, most with small hinge remnants, the 1a and 2a values with some adhesions to gum, a few negligible short perfs at top of 4a, irrelevant given the rarity of this desirable set, very fine; (Sc. 70-74, $7,800).King Chulalongkorn rejected these designs in 1897, but some were mistakenly released to three post offices in October, 1899. (Image)

Est. $3,000-4,000

1907 20t olive green Surcharge, overprinted "Siam / Postage / 20 / Ticals" in black, showing the "oval dot after Ticals" variety, hinged original gum, a scarce unused example, of which only 2,484 examples were issued, most of which were used on parcels to China, fine and rare; with 2020 Sismondo certificate. (Sc. 107var, S.G. 107a) (Image)

Est. $1,500-2,000

1912 5b violet & black to 20b slate blue & red brown, hinged, large part original gum, fresh colors, well-centered, the three top values of the set, fine-very fine. (Sc. 154-6, $950) (Image)

Est. $200-300

1918 10b olive green & violet brown, Red Cross semi-postal, hinge remnants, exceptional centering and wonderfully-detailed impression, usual violet post office marking on reverse, a beautiful stamp, very fine. (Sc. B10, $575) (Image)

Est. $200-300

1918 20b brown & greenish-blue Red Cross semi-postal, used with neatly-struck partial circular date stamp, select centering and precise impression, violet post office handstamp on reverse, adhesion on back, a lovely example of this key value, of which only 500 examples were printed, very fine; with 2020 Sismondo certificate. (Sc. B11, $1,500) (Image)

Est. $500-750

1920 2s+3s to 5s+5s Scouts Fund Overprints, most lightly hinged, a few small h.r., a well-centered set, chiefly fine-very fine. (Sc. B18-B23, $570) (Image)

Est. $150-200

1920 2s to 50s Scout's Fund Overprints, extremely lightly hinged, a few appear n.h., a well-centered, fresh set, very fine. (Sc B24-30, $415) (Image)

Est. $100-150