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圖錄編號
200
圖錄編號 200*
初步估價 50,000 - 100,000 €
This is a lot of a former auction!

Sigmund Riefler 慕尼黑,機蕊號 89,型號 D,DRP編號 50739/100870,高 1375 mm,約 1904

意義深遠的精密擺秒壁鐘,型號 D,Riefler設計的彈簧重力擒縱,在1906年送交

Cleveland的"Warner and Swasey Observatory"天文台的 "Case Institute of Technology" (錶殼技術中心)


Sigmund Riefler, Munich

, Movement No. 89, Typ D, DRP No. 50739/100870, Height 1375 mm, circa 1904

An important tank precision regulator - Type D - with Riefler spring impulse escapement - sold to "Warner and Swasey Observatory" of the "Case Institute of Technology"in Cleveland and delivered in 1906


Case: air pressure constant glass tank with glass dome, precicion mercury barometer. Dial: silvered, inlaid radial Arabic 0-23 hour indicator at "6", auxiliary seconds at "12", brass bezel, half-moon control window for electrical winding system, blued spade hands. Movm.: rectangular brass 4-pillar movement, first quality, matted, gilt, screwed platform with Riefler's gravity escapement and adjustable knife edge suspension for pendulum on agate discs, Invar nickel/steel compensation pendulum no. 726 - Type J, with aneorid and attached plate to put on weights.
#40057
錶殼 好, 需要維護, 多處極細的裂紋
錶盤 非常好, 輕微氧化
机蕊 非常好, 需要維護


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