D/F.B." h.s. at left; an attractive example of this rare cachet. Photo" /> cover 1929 (24 Feb.) envelope carried by S.S. <I>Duchess of Atholl</I> to London, showing a superb strike of the "TRISTAN DA CUNHA/ISLAND OF" Type IVa cachet in red overcancelled by London Paquebot machine d.s. for 18 March and hexagonal frame "T", "1½<V>D/F.B." h.s. at left; an attractive example of this rare cachet. Photo | Christie's