LONDON.- An important inscribed Mughal emerald personal seal set in a diamond encrusted gold bangle and bearing the name of Major Alexander Hannay, an East India Company officer, will be sold on April 5th in Bonhams sale of Indian and Islamic art. Estimated to sell for £30,000 to £50,000, the rectangular 18th century emerald is table-cut and was mounted in an enamelled gold bangle in the early 19th century. The three-line Persian inscription on the face of the emerald is in nasta’liq script and reads: “Amin al-Mulk Ashraf al-Dawla Alexander Hannay Bahadur Arsalan Jang AH 1185/ AD 1774-5”. Major Alexander Hannay was in the service of the East India Company under William Hastings at the time when the company had transferred its trading role into a more military administrative one. In 1778, Hannay left Hastings’ service and entered that of the Nawab of Oudh. He managed the district of Gorakhpur, when during this period