773 - Pennington Observation Clock

Pennington Observation Clock Observation clock by Robert Pennington, London, dating from 1816. The clock comes from the Gerd Ahrens Collection (Ahrens number 469). Housed in a rectangular box made of precious wood with a hinged lid and brass fittings; the lid has a circular cutout on the inside. A glass-covered, fire-gilded case is set into the wooden box (9.5 x 5.7 x 11.1 cm). White enamel dial with Roman hour numerals, an outer minute track, and a small seconds hand at 12 o’clock. Pear-shaped gold hands. Fire-gilded movement with an Earnshaw chronometer escapement. Two-leg compensation balance. Cylindrical blued hairspring. Balance cock richly decorated with a diamond-set cover. Winding key included. The key to lock the case is missing. Enamel dial with a fine hairline crack at 7 o’clock. Watch from the important collection of Gerd Ahrens, Lucerne (cf. The Pocket Watch Collection of Gerd Ahrens, Munich 2006, p. 259). Auction date: November 26, 2026 Approximate auction time: 10:22 a.m. CET