Prosoper Louis Vagnier ( 1800 - 1900 ) was a French painter. Prosoper Louis Vagnier s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 432.64 USD for Escalier au Luxembourg in 2004 to 1798.62 USD for Interior with to young women at a table. in 2012 , based on the size and medium of the artwork.