Movement: 22’’’ nickel lever movement stamped twice with the Geneva seal, 21 jewels, 8 adjustments, Guillaume balance, micrometer regulator, movement stamped EXTRA, numbered 191434 twice
Dial: amber enamel dial, Roman numerals, blued steel hands, two subsidiary dials for constant seconds and 26-hour power reserve indication with Breguet numerals and blued steel hands
Case: 18k yellow gold, cuvette engraved Awarded First prize Geneva Astronomical Timing Contest 1926-1927, Made for Henry Graves Jr. New-York 1927, case back engraved with the crest of Henry Graves Jr. and motto Esse Quam Videri, inside case and cuvette stamped 413405.
Signed: case, cuvette, dial, and movement
Diameter: 58 mm
Accompanied by Patek Philippe Extract from the Archive confirming the year of manufacture in 1910 and the date of sale on 2 November 1927, with remarks on the engraved coat of arms and the achievement of First Prize in the 1926 Geneva Observatory timing contest