Christian Keller ( 1725 - ) is a painter. Christian Keller s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 276.58 USD for Allegory of Luck and Love; and Allegory of Fertility in 2005 to 645.36 USD for An allegorical figure of Autumn in 2005 , based on the size and medium of the artwork.