Tay Bak Koi ( 1939 - ) is a Singaporean painter. Tay Bak Koi s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 957.19 USD for Flying in 2005 to 2024.29 USD for (i) Figures at river; (ii) Birds; (iii) Figures at mountain in 2017 , based on the size and medium of the artwork.