Fine and interesting LeCoultre GRUEN Atmos clock caliber 528 sold in the US by GRUEN COSMOS, NY in the 60ies. Attractive wooden case with 4 windows to see the dial and movement. The front window can be taken out for starting the atmos or time set. Beautiful white dial with applied golden roman numerals. Very rare model with LeCoultre signature on the dial. Fully serviced. Perfect condition. Fine and interesting LeCoultre GRUEN Atmos clock caliber 528 sold in the US by GRUEN COSMOS, NY in the 60ies. Attractive wooden case with 4 windows to see the dial and movement. The front window can be taken out for starting the atmos or time set. Beautiful silver dial with applicated golden roman nuemrals. Very rare model with LeCoultre signature on the dial. Fully serviced. Perfect condition. Comes with a reprint of the “Cosmos Clock instruction sheet”. Highly collectible.