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A PAIR OF ART DECO BLACK OPAL BOXES, BY TIFFANY & CO.
Comprising two mosaic black opal boxes, one of square-shaped outline enhanced by single-cut diamond clasp, the other of hexagonal outline, each opening to reveal a fitted mirror, mounted in 18k gold, circa 1920, 1¾ x 1 ins. and 2 x ¾ ins., with French assay marks and maker's marks
Signed Tiffany & Co. (2)