From Musi River dredging at Palembang. A Sumatran recast in high tin content bronze. In China tin was slightly more expensive than copper. To adulterate alloy of forgeries, lead was used, which does not dissolve in copper, and so weakens the flan. In the immediate vicinity of the Indonesian/ Malaysian tin mining fields, it was cheaper than even lead. Metal of this coin is white, as if of zinc. At 40% lead, a bronze coin is soft enough to fold. At 40% tin, it is bell bronze, its hardest form, used also to cast coin dies. This coin is probably above 50% tin.
Some retooling of the characters is evident. It cannot be told if that was already present on the coin used as its seed, or done in the recasting process.