New Delhi, March 9 -- What could a piece of paper, frail, dated and perforated at the edges, possibly convey? Stamps, ordinary and often overlooked, have been rendered almost redundant in the digital era. These small postage imperatives, however, serve as a gateway to history. Now, a collection of 120-odd stamps from 1869-1949, a majority of which were printed during the reign of the seventh and last nizam of Hyderabad, will be exhibited at Bikaner House in Delhi....