cover SINGAPORE TO HONG KONG: 1905 (19 Aug.) type 4 c.d.s. tying K.E.VII 1c. on picture post card addressed to Shanghai; this is very rare used as a cancellation on cover. Also 1906 picture post card to Shanghai bearing "HONG KONG TO SHANGHAI" type 7 and 1910 picture postcard bearing K.E.VII 4c. tied by "TENYG-MARU/SEA POST" c.d.s. with boxed "PAQUEBOT" alongside. A desirable group. (3). Photo