Antique 1920s Kroheim & Oldenbusch The Gleaners Heavy Polychrome Spelter Bookend November 13, 2023 admin Made by the Kronheim & Oldenbusch, New York, USA, the K&O mark appears on the gold colored back of each piece, among the rows of fleur de lis. The artist’s mark, “J Pickarski” appears on the lower right of each piece.