178
        
        
          1177
        
        
          1932 (27 June) An air mail cover from Sinkiang to Tientsin, bearing opt. 'Limited for use in Sinkiang' on Junk 10c, 20c double rate,
        
        
          plus a rare handstamped in red char. 'Air Mail' on 30c Reaper (Chan PSA4), tied by bilingual 'TIHWA/URUMTS' cds, and bilingual
        
        
          'TIENTSIN' arrival cds, on reverse cds, on reverse with Sinkiang seal label. Extremely rare usage of 'Air Mail' overprint on cover,
        
        
          very fine. Photo
        
        
          HK$ 30,000 - 35,000
        
        
          1177
        
        
          
            Szechwan
          
        
        
          Ex. 1178
        
        
          1179
        
        
          1180
        
        
          1181
        
        
          1178
        
        
          A small selection of opt. 'Limited for use in Szechwan' on SYS London 1nd print complete used set, Martyrs Peking print complete
        
        
          used set, plus 2 covers with opt. issue. Photo
        
        
          HK$ 1,000 - 1,400
        
        
          1179
        
        
          1933 Opt. 'Limited for use in Szechwan' on Peking print Martyrs 1/2c sepia, with opt. char. 'Specimen' in black. Chan SC12S.
        
        
          Photo
        
        
          HK$ 300 - 400
        
        
          1180
        
        
          1934 (18 Feb.) A cover from Neikiang reg. to Chengtu, bearing opt. 'Limited for use in Szechwan' on Junk 1c and 5c block of 4,
        
        
          tied by bilingual 'NEIKIANG' cds and 'CHENGTU/22.2.34' arrival cds, with small part reg. receipt on reverse, a worm hole at top
        
        
          left. Photo
        
        
          HK$ 800 - 1,000
        
        
          1181
        
        
          1934 (20 Jan.) A cover from Chungking air mail to Shanghai, bearing opt. 'Limited for use in Szechwan' on Peking 2nd print Junk
        
        
          1c, 5c in pair and Peking print Martyrs 30c in pair, tied by bilingual 'CHUNGKING/18.1.34' cds and bilingual 'SHANGHAI/20.1.34'
        
        
          arrival cds. fine. Photo
        
        
          HK$ 1,000 - 1,200