1689
Stamps overprinted "S.O." or "S.D."
used 1891 (Jan.) 2c. carmine overprinted "S.O." altered to "S.D.", neatly cancelled by Hong Kong c.d.s., and 2c. carmine overprinted "S.D." used with small part double-ring c.d.s. Photo for first.

細節
used 1891 (Jan.) 2c. carmine overprinted "S.O." altered to "S.D.", neatly cancelled by Hong Kong c.d.s., and 2c. carmine overprinted "S.D." used with small part double-ring c.d.s. Photo for first.