LE COULTRE ATMOS MANTEL CLOCK ,20th Century, Marked Le Coultre & Cie, Serial # 269675. Le Coultre brass and glass cased 'Atmos' mantel clock. Squared white face with applique gold tone Arabic numerals and notches. Gold hour and minute hands. 15 jewels. - 9 1/8" high x 8 1/4" wide x 6 1/4" deep. Estimate $400-500