IWC, SWITZERLAND, REF. 5500, PERPETUAL CALENDAR, LIMITED EDITION AT 100 PIECES, 18K YELLOW GOLD

A very fine and rare, large and heavy 18k yellow gold, manual wind open-face, keyless-winding pocket watch with perpetual calendar. Matte silvered dial with radial Roman numerals, outer minute track and Arabic five-minute numerals. Subsidiary dials for the date at 3 o’clock, day of the week at 9 o’clock, and month with leap-year cycle and subsidiary seconds at 6 o’clock. Moon-phase aperture at 12 o’clock, with moon’s age indicated on the border.

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