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Auktionen Dr. Crott 91st Auction

724 Heinz Wassermann, Deutsche Uhrmacherschule Glashütte in Sachsen, Movement No. 3349, 59 mm, 172 g, circa 1926  An important heavy chronometer created at the German Watchmaking School in Glashuette, as new and of museum quality, with indicator for true differential power reserve according to Alfred Helwig - with documentation and extract from the archives from the Uhrenmuseum (Watch Museum) Glashütte Case: silver, polished, case design “Lucia”, gold crown, pusher, hinges and shackle by Karl Richter in Glashuette. Dial: silvered, indexes, auxiliary seconds, power reserve indicator, blued spade hands. Movm.: 3/4 plate movement, frosted, gilt, screwed gold chatons, spring detent escapement, fine escape wheel with mirror-polished steel cock, heavy gold screw compensation balance, blued freesprung helical balance spring, florally hand-engraved balance cock. Heinz Wassermann He was born in Medewitzsch in 1906 and attended the “Deutsche Uhrmacherschule Glashuette” in 1925-1926. Sponsered by A. Helwig, he produced in his school time a micrometer (No. 3311), a raw movement for a tourbillon, Cal. 46, with two barrels and this pocket watch chronometer (No. 3349) with spring power, helical hairspring and a new screw- differential-up-and-down movement. He is explicitly mentioned in Alfred Helwigs reference work “Differentialwerke” (differential movements), Glashuette 1929, pages 24-25: “… the creator of the first watch of this kind is our student Heinz Wassermann of Medewitzsch, D.U.S. (for German watchmaking school) No. 3349, year of 1926…”. This pocket chronometer is the only example with up and down movement to come from the German watchmaking school and certainly one of the finest precision watches ever created there. Heinz Wassermann’s chronometer is one of 17 outstanding pieces described and illustrated in a publication commemorating the 50th anniversary of the German watchmaking school in Glashuette (1878-1928). Heinz Wassermann 德國Sachsen邦格拉蘇蒂專業學校 — 意義深遠, 博物館價值,厚實的格拉蘇蒂專業學校所創作完全不同風格的新 款作品。Alfred Helwig設計的機蕊及動力儲存顯示,附相關文件 40518  C: 2 D: 2 M: 2, 41  55.000 - 65.000 EUR 60.600 - 71.500 USD 495.000 - 585.000 HKD