CHRISTIAN SEPP AND JAN CHRISTIAN SEPP ( 1912 - 1775 ) was a painter. CHRISTIAN SEPP AND JAN CHRISTIAN SEPP s works have been auctioned off multiple times, with realized prices varying according to the size and medium of the artwork, for instance of 3250 USD for Gavia Vulgaris, Tringa Vanellus, from Nederlandsche Vogelen in 2018