Pair of art deco bookends in black and grey marble

Period: ca. 1920-1940 two art deco bookends that would look great in any interior design style due to their clean simplicity. They are composed of two perpendicular slabs of cream marble and triangular segments of grey marble with white veining. Condition: good. Micro scratches on the edge of one of them (see photo) dimensions: 13 cm high, 13 cm long, 7 cm wide.