By Andreas Müller, Prague, early 19th century Quarter-chiming mechanism ('grande sonnerie viennoise'), chiming every quarter followed by the past hour in full.

Early 20th century The porcelain dial with Roman numerals, the mechanism with anchor escapement, with its original case.

Late 18th century Original French mechanism, the going train with cord suspended pendulum, repetition striking mechanism, striking once on the half hour and the whole hour in full, with repetition on demand.

By Jan Gobels, Amsterdam, mid-18th century The dome crowned by two figures of pheme and Mercurius, the silvered dial with Roman numerals, with a separate second hand, the apertures indicating the date and the lunar phase, the mechanism with an anchor escapement, striking on the whole and the half hour in full on different bells, with an alarm mechanism.

By Oscard Fresard, Lucerne, late 19th century The enameled dial with Roman numerals, the mechanism with a platform escapement, signed 'Oscar Fresard Lucerne', in a leather box.

Ca. 1820-30 The enamel dial with Roman numerals, separate hand indicating the date, both the dial and backplate signed, the thirty-hour mechanism with cord suspended pendulum, quarter-chiming (grande sonnerie viennoise).

First quarter 19th century, France the enamel dial with Roman numerals, signed 'Roquet à Paris', the French mechanism with cord suspended pendulum, striking on a count wheel once on the half hour and the whole hour in full.

Late 20th century The enameled dial with Roman and Arabic numerals, signed 'L'Epée France', also showing the day of the week and the date, the mechanism with a Swiss anchor escapement, with a chiming mechanism and an alarm, repetition on demand, in its proper case.

By Joseph Herring, London, second half 18th century The silvered dial with Roman numerals, with mock pendulum and date aperture, with separate hands indicating 'strike/silent' and a dial with choice of six different tunes, the three-fusee mechanism with spring suspended pendulum (signed by The Hague clockmaker 'J.A.M. Mulder'), the anchor escapement striking on the whole hour, followed by a tune on eleven silvered bells.

Late 18th century The dial with Roman numerals, a single hand, the going train with verge escapement and cord suspended pendulum, striking on the whole hour on a count wheel.

Late 18th century The enamel dial with Arabic numerals, the French mechanism with cord suspended pendulum, striking mechanism on a count wheel and a silver amalgamated bell, striking once on the half hour and the whole hour in full.

Late 20th century The enamel dial with Roman and Arabic numerals, signed 'L'Epée 1839 Paris', with separate hands indicating the day of the week, the date, the seconds and the alarm, the mechanism with a Swiss anchor escapement, an alarm and a chiming mechanism, with a musical box in the bottom of the case.

Mid-19th century The enamel dial with Roman numerals, the French mechanism with cord suspended pendulum, the striking mechanism with a count wheel, striking once on the half hour and the whole hour in full on a silver amalgamated bell.

By Griebel, Paris, first quarter 19th century The enamel dial with Roman numerals, signed 'Griebel Rue Vivienne no. 13', the French mechanism with cord suspended pendulum, the striking mechanism with a count wheel, striking once on the half hour and the whole hour in full on a silver amalgamated bell.

By Jean Plan, Paris, ca. 1750 The enamel dial with Roman numerals, the pocket watch mechanism with a verge escapement, signed 'Jean Plan Paris'.

19th century, possibly French The enamel chapter ring with Roman numerals, the mechanism with a pin wheel escapement and a temperature compensating pendulum, quarter chiming on two bells, striking the whole hour in full on a third bell, with repetition on demand.

Second quarter 19th century The gilded dial with Roman numerals, signed 'R. Lopin Palais Royal no. 143', the French mechanism with cord suspended pendulum, the striking mechanism with a count wheel, striking once on the half hour and the whole hour in full on a silver amalgamated bell.

By L. Leroy & cie., Paris, late 19th century The enamel dial with Roman and Arabic numerals, with engraved face, dial signed 'L. Leroy & cie, 13-15 Palais Royal Paris', the mechanism with a platform escapement, engraved with the name of the maker, with its original case.

Late 20th century With Swiss anchor escapement and a balance wheel, driven by an electrical motor.

By Fontaine, Amiens, mid-18th century The silvered dial with Roman and Arabic numerals, signed 'Fontaine à Amiens', with apertures showing the day of the week, the date and the lunar phase, with a central second hand, the 8-day movement with an anchor escapement driven by a weight, the chiming mechanism driven by a spring, striking once on the half hour and the whole hour in full.

Mid-19th century The brass dial with movable digits, the mechanism with a verge escapement, nicely engraved with a flower vase.

Mid-19th century The polychrome painted dial with Roman numerals and a bridal reef, the 30-hour mechanism with an anchor escapement, striking once on the half hour and the whole hour in full.

Late 19th century The enamel dial with Roman numerals, the mechanism with a cylinder escapement, with its original case.

By Godfrey Poy, London, second quarter 18th century The silvered dial with Roman numerals with a second 'Strike-Silent' dial and a date and faux pendulum aperture, signed 'Godfrie Poy London', the back plate nicely engraved, the two-fusee mechanism with a verge escapement and a spring-suspended pendulum, striking the whole hour in full, repetition on demand, quarter chiming on six bells and the nearest whole hour.

Late 19th century The enamel dial with Roman numerals and a central second hand, signed 'Chaudé horloger de la Marine, Paris Palais Royal 35', the mechanism with an anchor escapement and a Brocot spring-suspended temperature compensating pendulum, repetition striking once on the half hour and the whole hour in full.

Early 20th century The enamel dial with Roman numerals, with a central second hand, the mechanism with a platform escapement, an alarm and a chiming mechanism with repetition on demand.

Late 18th century The enamel dial with Roman numerals, the mechanism with a verge escapement and a cord suspended pendulum, repetition striking mechanism on demand, striking the last whole hour in full and the quarters, with an alarm.

Last quarter 20th century The polychrome-painted dial with Roman numerals and a landscape, with two apertures for the date and the lunar phase, the 30-hour mechanism with a verge escapement, the striking mechanism on a count wheel, striking once on the half hour and the whole hour in full.

Late 20th century The case engraved with foliate scrolls and with 'Delepine No. 35', the enamel dial with Roman and Arabic numerals, signed 'L'Epée Fondée en 1839', the mechanism with a Swiss anchor escapement, a chiming mechanism and an alarm, with repetition on demand, in its proper case.

Late 18th century The enamel dial with Arabic numerals, signed 'Folin l'Ainé à Paris', the mechanism with an anchor escapement and a cord suspended pendulum, the striking mechanism with a count wheel, striking once on the half hour and the whole hour in full on a silver amalgamated bell.

Third quarter 19th century The enamel dial with Roman numerals, the mechanism with a platform escapement, with a repetition striking mechanism, striking once on the half hour and the whole hour in full.

Ca. 1900 The silvered dial with Arabic numerals, the mechanism with a platform anchor escapement.

By Constantin Detouche, mid-19th century The dial with Roman numerals, signed 'C. Detouche à Paris', with a central second hand, the mechanism with an anchor escapement and a spring suspended temperature compensating pendulum, driven by a weight on a cord.

First quarter 19th century The enamel dial with Roman numerals, signed 'Louis Mallet a Paris', the French mechanism with a cord suspended pendulum, the striking mechanism with a count wheel, striking once on the half hour and the whole hour in full on a silver amalgamated bell.

Ca. 1900 The enamel dial with Roman numerals, the French repetition striking mechanism with spring suspended pendulum, striking once on the half hour and the whole hour in full.

19th century The hood surmounted by three gilt metal figures, the polychrome painted dial with spandrels depicting the Seasons, and a bridal reef, with an embroidered dust cover, the 30-hour mechanism striking once on the half hour and the whole hour in full, together with a pair of coal pliers.

Ca. 1900 The silvered dial with Roman numerals, the mechanism with a platform escapement and a chiming mechanism, the case dedicated to Captain R.F.A. Butterworth R.E. by the officers of the Northern Telegraph Companies R.E., February 16th 1910.

First quarter 19th century The enamel dial with Roman numerals, the French mechanism with a cord suspended pendulum, the striking mechanism with a count wheel, striking once on the half hour and the whole hour in full on a silver amalgamated bell.

Second quarter 19th century The enamel dial with Roman numerals, signed 'Jean Fleurant à Lyon', indicating the date with a central second hand, the mechanism with a pin wheel escapement and a maintaining power system whilst winding the clock.

Mid-19th century The silvered dial with Roman numerals, with a separate second hand, the back plate signed 'Robert à Paris', the going mechanism with spring suspended pendulum.

Early 20th century The enamel dial with Arabic numerals, signed 'A. Mellet La Haye', the mechanism with an anchor escapement, the striking mechanism on a gong, with an alarm.

17th century and later The dial with Roman numerals, marked with the Christogram 'IHS', the mechanism (with a verge escapement and a fusee) probably 18th century.

By Edwin Sattler, last quarter 20th century The enamel dial with Roman numerals and a separate second hand, the 30-day movement with a repetition striking mechanism, striking once on the half hour and the whole hour in full on a gong, repetition on demand, driven by cord suspended weights

Second half 20th century The enamel dial with Roman numerals, signed 'E. Gubelin Horloger Lucerne', the mechanism with a Swiss anchor escapement, marked 'Argent 0,935', in its proper case.

By J.N. De Graaf, The Hague, in 18th-century style, but probably made first quarter 20th century The burr-walnut case on ball-and-claw feet, the hood with openwork decoration, the dome surmounted by three giltwood figures, the silvered dial with Roman numerals, signed 'J.N. De Graaf Den Haag', indicating the day of the week, the month, the date and the lunar phase, separate dials for 'strike-silent' and 'play-not play', the mechanism with an anchor escapement, chiming the whole hour and half hour in full on different bells, playing twelve tunes on fifteen silver amalgamated bells.

Early 20th century The enamel dial with Roman numerals, the mechanism with an anchor escapement, the barometer with an English dial and a Fahrenheit thermometer, on a red marble plinth.