Watch List notes:

MALAY ARCHIPELAGO, Colonial. Straits Settlements. Victoria. 1837-1901. Proof CU Half Cent (22mm, 4.65 g, 12h). Calcutta mint. Dated 1890. Crowned head left / Denomination. Pridimore 204; KM 15. Traces of luster. In NGC encapsulation 6461693-001, graded PF 63 BN. Extremely rare proof-only issue.

Apparently the first example to appear at auction since the sale of the Jerry Remick Collection (Part I, Spink 184, lot 482).