A British couple discovered Indian antiques wrapped in newspaper in the dusty attic of their home in Berkshire. /VCG Photo

These artifacts were taken from the palace of Tipu Sultan in 1799 by their ancestor, a British army officer called Thomas Hart. /VCG Photo

The treasures are estimated millions of pounds, including a gun named "Tiger of Mysore" that was used in Tipu's last stand against the British and a gold-encrusted sword that bears the mark of Haider Ali Khan, Tipu's father and the previous ruler of Mysore. /VCG Photo

220-year-old betel nuts are also found in Tipu Sultan's solid gold betel nut casket with a peacock lock. /VCG Photo