China Provincial Issues Sinkiang 1925 (4 Apr.) two philatelic envelopes to Suiting bearing Adoption of Constitution 1c. and 10c. or 3c. and 4c. respectively tied by Ningyuan Sin (Kuldja) c.d.s. with another strike alongside, the reverse with Suiting arrival c.d.s. (5.4). Fine. (2 covers)