cover 1884 (9 Sep.) commercial envelope (company name on flap) addressed to Peking (addressee's name pencilled in) bearing Large Dragon 3 ca. vermilion-red (straight edge at right) cancelled by Tientsin seal type B on envelope addressed to Peking "Per S.S. Kowsking". the reverse shows "CUSTOMS/TIENTSIN" c.d.s. and a faint strike of "SHANGHAI/LOCAL POST" c.d.s. in blue (dated in error 5th September), fine. Photo
Combination with Customs Post
cover 1884 (9 Sep.) commercial envelope (company name on flap) addressed to Peking (addressee's name pencilled in) bearing Large Dragon 3 ca. vermilion-red (straight edge at right) cancelled by Tientsin seal type B on envelope addressed to Peking "Per S.S. Kowsking". the reverse shows "CUSTOMS/TIENTSIN" c.d.s. and a faint strike of "SHANGHAI/LOCAL POST" c.d.s. in blue (dated in error 5th September), fine. Photo

Details
cover 1884 (9 Sep.) commercial envelope (company name on flap) addressed to Peking (addressee's name pencilled in) bearing Large Dragon 3 ca. vermilion-red (straight edge at right) cancelled by Tientsin seal type B on envelope addressed to Peking "Per S.S. Kowsking". the reverse shows "CUSTOMS/TIENTSIN" c.d.s. and a faint strike of "SHANGHAI/LOCAL POST" c.d.s. in blue (dated in error 5th September), fine. Photo
Provenance
Sir Percival and Lady David, November 1969
James B. Whang, November 1994
Further details
The Local and Customs Posts handled each others mails, giving free delivery and acting as each others agent