Barbedienne art nouveau onyx clock excellent clock of the xix century made in onyx and bronze by barbedienne-signed on the clock and on the cup art nouveau. It is in excellent condition and measures: 45x35x25 cm. Good condition. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution