Chinese characters Kai Yuan Tong Bao / Blank. 20mm, 0.74 grams. Tegal?. See Zeno #189012.

Interesting early Dutch issue from Java. Tin (or tin-lead) Kai Yuans seem to be found around Tegal, a city in the northwest part of Central Java of Indonesia. Tegal is documented to have produced lead pitis definitely in VOC records beginning 1637 (See Zeno #189012.). This type seems not to be in any catalogues.