Details
cover -- 1875 (1 May) envelope (a few edge faults) from Malta to Yokohama bearing G.B. 4d. vermilion tied by "A25" duplex, the reverse with a good strike of "SINGAPORE-TO/HONG KONG" type 2b c.d.s. dated "MY/29 7/75" with Yokohama c.d.s. in blue alongside, unusual