Quite obvious what it is but finding further info is not easy. I know the plantation is Sumatra/Indonesia and Deli was originally a Dutch East Indies company. The tokens were paid to the estate workers instead of currency and had to be used on the estate shops. I assume the Chinese script is the value..1 Dollar ? No date indication but it doesn't look or feel old. A worn, silvery coated alloy metal token. Diameter approx 38mm, weight approx 12g. Can't find anything similar to gain a value, so any idea what it is worth ? Many thanks Brian.