Blanche Pernod Berthoud ( 1864 - 1938 ) was a Swiss painter. Blanche Pernod Berthoud s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 625.21 USD for Das Matterhorn. in 2011 to 2413.87 USD for Valaisanne in 2013 , based on the size and medium of the artwork.