bearing Shanghai local post 20 cash on 80 cash green block of four cancelled by two superb strikes of large "LOCAL POST OFFICE SHANGHAI" garter in red and used in combination with Small Dragon 1ca., 3ca. and 5ca., perf.11¾ cancelled by Shanghai seals; the reverse with Shanghai local post and Customs c.d.s. A most attractive and charming cover. Ex Sir Percival David. Photo" /> cover 1889 (12 May) local envelope addressed to<I> "J Mencarini c/o I M Customs Shanghai"</I> bearing Shanghai local post 20 cash on 80 cash green block of four cancelled by two superb strikes of large "LOCAL POST OFFICE SHANGHAI" garter in red and used in combination with Small Dragon 1ca., 3ca. and 5ca., perf.11¾ cancelled by Shanghai seals; the reverse with Shanghai local post and Customs c.d.s. A most attractive and charming cover. Ex Sir Percival David. Photo | Christie's