Your notes are from the "Anggrek" (Orchid) series issued by Bank Indonesia in 1964. The 10 sen was the smallest denomination (1/10 of a rupiah).
Demonetized; no longer legal tender. Collectible value: ~$1–$5 USD per note in uncirculated condition. Circulated notes worth less. Value depends on grade, serial number, and market demand.
Consult a numismatic dealer or check sold listings on eBay/Numista for current pricing.