, rated "4" and endorsed "Messrs Russell & Co" and showing Hong Kong c.d.s. (26 May) on flap; a scarce early letter" /> cover 1846 (19 June) an entire letter from Shanghai to the Ship Great Britain at Cun Sing Moon<I> "per Brig 'Gem'"</I>, rated<I> "4"</I> and endorsed<I> "Messrs Russell & Co"</I> and showing Hong Kong c.d.s. (26 May) on flap; a scarce early letter | Christie's