Lot 328 -A Cizhou russet splashed black glazed bowl, China, Song-Jin dynasty, diameter 21 cm. Estimate CHF 3 000/5 000 (€  2 780/4 630). Unsold © Koller Auctions

Wide shell on narrow foot ring, the lip slightly bent inwards. Over black shining black glaze with rusty little dots. Inside, five large rusty spots run from the edge of the center. In the foot ring two drill holes (material removal for TL test). wo drilling holes at foot rim.

A Thermoluminescence test by Oxford Authentication, 20 March 2000 confirms the dating. 

Koller Auctions. Asian Art: Himalaya, China - Tuesday 13 June 2017