cover -- 1819-31 entires or entire letters (4) comprising 1819 London to Calcutta showing double-circle "INDIA SHIP LETTER/Crown/LONDON" (Type In.2), also 1826 Middleburg to London, 1829 Nurnberg to London and 1831 Oels to London, all three showing unframed "SHIP LETTER/Crown/LONDON" h.s. types. A good quartet