Charles OUDIN, Genève, Horloger de la Marine Half-savonnette pocket watch in yellow gold (750). Back cover decorated with a coat of arms under a marquis's crown, on a guilloche background. Front cover with porthole, highlighted with blue Roman numeral indexes for the hours and chemin de fer for the minutes. White enamelled dial, signed, indexes with Roman numerals for the hours, dashes in black and Arabic numerals in red for the minutes. Second hand at 6 o'clock. Hand-wound mechanical movement, signed. Yellow gold (750) dust cover, signed, "Palais Royal 52, Paris" and numbered 23312. Marked with an eagle's head. Gross weight: 144 g. - Case diameter: 49 mm. Scratches, cracks and marks on the dial; scratches from use.