White enamelled dial, not signed, indexes painted in black with Roman numerals for the hours and dashes and Arabic numerals for the minutes.
Key winding movement. Plate with cock, signed and numbered 5717.
Case back marked IAOR and numbered 1714.
Diameter: 45 mm.
Gilt copper, chips on the dial, two of which are glued back.
Charles BERTRAND, Watchmaker of the Royal Academy of Sciences.