The inspiration for this stylish Mantle Clock comes from the work of the Early 20th Century scientists. During 1925, the year of the Paris Exposition des Arts Decoratifs a German Physicist named Werner Heisenberg took the first steps in formulating Quantum Mechanics. The new theory would go on to replace Classical physics at the Atomic level and change fundamentally the way we view the world. MINT CONDITION. No chips, cracks, damage or repair of any kind. Back of clock stamped with Echo of Deco logo, signed Malcolm Akerman. Clock is 6 1/2" tall and 6" wide. Requires 1 AA Battery. Individually hand crafted and designed. We maintain a quantity of Echo of Deco inventory in stock. For out of stock items, please allow 4 to 6 weeks for delivery.