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No.
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200
Lot No. 200*
Estimate  50,000 - 100,000 €
This is a lot of a former auction!

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
Case: good, to be restored, hairlines
Dial: very good, slightly oxydized
Movm.: very good, to be restored


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