"Domed Marble Weight of Burma", Rice weight, 5 viss (8.180 g), Burma (Myanmar), prior to 1878

References:
Donald and Joan Gear, "Earth to Heaven", Appendix 1, The Domed Marble Weights of Burma, Silkworm Books, 1992/2000
Michael Herrfurth und Hartmut Mollat, Arts of Asia, "Special Burma Issue", Vol. 43 no. 3, May - June 2013, p. 125