Johann Sayller, Ulm, 47 x 37 mm, 106 g, circa 1640
An extremely rare, astronomical Puritan pre-balance spring verge watch with calendar
Case: silver, oval, polished, turnable pendant, seven-piece hinge. Dial: brass, firegilt, applied silver chapter ring with engraved and inlaid radial Roman hours, outer ring with twelve touch pieces for night reading, silver date ring, inner gilt brass lunar calendar ring, central silver disc with engraved aspectarium and aperture for moon phase, single blued steel tulip hand and date pointer. Aperture above "12" for month and below "6" for weekday in German. Movm.: oval full plate brass movement, keywind, firegilt, signed, applied floral silver decorations, large barrel with fusee and early chain, baluster movement pillars, verge escapement, ratchet wheel set up with blued steel spring, two-arm steel balance without balance spring, fine florally engraved, pierced silver balance cock, blued steel arm for hog's bristle regulator marked on a dotted scale.
Johann Sayller (1594-1668)
Sayller was born in Angelberg in the diocese of Freising, Lower Bavaria and was one of the most renowned makers of complicated watch and clocks in the 17th century.
Johann Sayller settled in Ulm in 1617 and became a citizen in 1624; in 1646 he became guild master. Sayller created his master piece in 1626: a rolling ball clock after Margraf, which was first exhibited in the town hall of Ulm and from 1812 on in the private library of King Frederick I of Württemberg. Sayller’s pieces were so superior and sought after that they were mostly used as gifts for important and famous people. He created precious pendant watches, complicated astronomical bracket clocks and other technically sophisticated pieces. Two of his rolling ball clocks and a silver astronomical tower-shaped bracket clock with a three months power reserve are in the posession of the Württembergisches Landesmuseum.
Source: http://www.uhrenhanse.org/sammlerecke/portraits/namen/name_s.htm, as of 01/22/2015
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