Kupferova in Egyptian costume František Drtikol (1883-1961) :: Ervína Kupferová as an Egyptian princess, 1919. Blind stamp “Copyright Drtikol Prague”| src mutualArt František Drtikol :: Ervína Kupferová (in Egyptian costume) lying down, 1919. Blind stamp: “Drtikol & spol. Praha [illegible date]”. Silver print. | src mutualArt František Drtikol (1883-1961) :: Ervína Kupferová as an Egyptian woman, 1920. Pigment print on paper | src Aukční dům Zezula