cover 1859 (31 Aug.) entire letter headed "Bidi Sarawak Singapore", marked "By Southampton" and addressed to Middlesex, showing a superb strike of the double-ring "POST OFFICE/SARAWAK" h.s. with "8/31/59" date in manuscript and bearing India 1856 4a. (left half of stamp missing) indistinctly cancelled, part London c.d.s. in red on reverse; the entire letter with some soiling and other faults though surely one of the finest strikes of this rare handstamp. Photo