Six 19th century Burmese bronze 'opium' weights

Six 19th century Burmese bronze ‘opium’ weights, or Hintha Duck weights,  on hexagonal bases. Six weights of varying sizes from the traditional measurement of 1 ‘Vis’ (1.632kg) down to 1 Tikal (16g). These weights were used for weighing precious commodities such as gold, silver and pearls.
Burmese, circa 1800 - 1820
Stock No. 1301