This is a tampang coin from Perak Sultanate as early as 16th century. This form of currency is called tin ingot. These ingots were casted of fixed weight and used for all major transactions in the bazaar as a form of currency.The value of each ingot depends upon its weight. By mid 1850's , ingots were gradually replaced by coinages.
Obv : Blank Rev: Blank
Weight : 355 gm Dim : 74 mm
Date : 16-19th century
Rarity : RRR Denom : 1 tampang Material : Tin Reference : SS20