Hanni Bay ( 1885 - 1978 ) was a Swiss painter. Hanni Bay s works have been put up for auction numerous times, with realized prices varying from 82.05 USD for Heugarben auf einem sommerlichen Feld. in 2007 to 493.67 USD for Stehendes Mädchen mit Sonnenschirm in 2010 , based on the size and medium of the artwork.