Lot No. 297 (95th Auction)
Hahn à Echterdingen, 66 mm, 124 g, circa 1782

A gentleman’s remarkable German astronomical pocket watch by legendary priest and engineer Philipp Mattäus Hahn - with leather-covered box specially hand-made for this watch at a later date
Case: gilt. Dial: enamel. Movm.: full plate movement, open barrel, pierced and engraved balance bridge with regulator scale, large brass balance, cylinder escapement.

The white enamel dial has an outer chapter ring with black Arabic numerals for the centre seconds with a gilt seconds pointer. Three subsidiary chapter rings show the hours and minutes with Roman and Arabic numerals at 10 o'clock; the date and the weekdays in combination with the planetary days are at 2 o'clock. At 6 o'clock the moon phases in combination with the time from moonrise to moonset are shown, divided into quarters of the night, with red Arabic numerals on the left half of the dial, black Arabic numerals on the right).

Philipp Matthäus Hahn (1739-1790) was a German pastor, astronomer and inventor. In about 1763 he devised a precision sundial, or heliochronometer that incorporated the correction for the equation of time. In 1773 he designed one of the earliest mechanical calculators of which two are known to have survived to the present day. A renowned clockmaker, several horological museums display his works, including the Deutsches Uhrenmuseum which contains a mechanical orrery (planetarium) and a Weltmaschine by the "Priestermechaniker (priest mechanic)".
Source:​us_Hahn, as of 03/07/2017.
Estimate  13,000 - 20,000 €

Price Realised  26,100 €
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