Borneo, Gongsi lead-tin local cash coin (6.86 gram), “da gang gong si”, mining gongsi. In 1776 the 14 mining gongsis around Montrado, formed a federation known as He-shun._x000D_ Around 1808 the He-shun federation originally consisting of 14 gongsis had dwindled to only seven members. Early in 1819 a quarrel arose between Da-gang and San-tiao-gou about the presidency of the He-shun federation, resulting in a withdrawal of the latter with its allies Shi-wu-fen and Tai-he. They settled north of the Selakau river, San-tiao-gou with its capital at Seminis and Shi-wu-fen at Loemar. The He-shun federation consisted thus of four gongsis._x000D_ After the detection of a conspiracy of Keng-wei and Xin-wu together with San-tiao-gou against Da-gang, these He-shun gongsis were dissolved by Da-gang on 8 October 1837, leaving Da-gang now synonymous with He-shun in absolute power in Montrado until 1854. Some members of the Keng-wei and Xin-wu gongsis migrated eastwards to Tajan and northwards to Sarawak, respectively - VF+ / rare_x000D_ Ref.: T. D. YIH and J. DE KREEK "The Gongsi Cash Pieces of Western Borneo and Banka in the Ethnographical Museum at Rotterdam" (The Numismatic Chronicle, Vol. 153, London 1993)

Islamic sultanates, Macassar/Gowa, Sultan Malik us-Sa'id, 1639-53, Tin Pitis (1.90, 1.78 gram) - Lot of 2 coins, one VF, the other VG . Rare € 100_x000D_ Ref.: Millies 282; ZENO 203309

Siak Sultanate (Sumatra), Bantam-style tin pitis, early 17th century. Obv. Sultan Siyak in corrupted Javanese script / rev.: Blank - XF / rare

Sumatra, Islamic sultanates, Batubara (Lima Laras), Tin Pitis (0.96 gram) + ¼ pitis (0.25 gram). Obv,: Sultan Zain al-'Abadin Mu'azam Shah / rev.: Masruf Batu Bahar Sanat 1158 (AD1745). Lot of 2 pieces - Fine+ - Ref.: for the provisional attribution and discussion about the petty sultanate, see ZENO 275615.