A gold icosahedron box 1799
from the treasury of Tipu sultan taken after the battle of Seringapatam, May 4TH, 1799, India, 17th or 18th century
made of beaten gold, of polyhedral form comprised of twenty isosceles ornamented triangles, each triangular face hammered with an Arabic numeral, the numbers are 11, 20, 21, 31, 41, 51, 61, 71, 81, 91, 101, 201, 301, 401, 501, 601, 701, 801, 901 and 202
