cover Tumlook: 1837 (15 July) entire letter from Dinapore to Calcutta and redirected three times between Tumlook, Calcutta and Barrackpore, the reverse showing good strike of the oval "TUMLOOK/POST OFFICE" datestamp (HG 1), similar Dinapore type (HG 2) and various Calcutta markings; some perimeter and flap damage clear of the first strike. Rare and unusual. Photo