JAEGER-LECOULTRE REF. 180.1.99
PERPETUAL CALENDAR ALARM YELLOW GOLD
Jaeger-LeCoultre, Perpetual Calendar, Grand Réveil, No. 0597, Ref. 180.1.99. Made in the 1990s.
Very fine and rare, large, center seconds, self-winding, water-
resistant, 18K yellow gold wristwatch with perpetual calendar,
moon phases, mechanical alarm, 24-hour indication, 3 crowns and
an 18K yellow gold Jaeger-LeCoultre deployant clasp.
Two-body, solid, polished, case back with 6 screws, stepped
bezel, fluted and curved lugs, alarm winding-crown at 2,
time-setting and winding-crown at 4, push-button for quick
adjustment of the calendar at 8, sapphire crystal.
White with applied luminous yellow gold indexes, subsidiary
dials for the date, days of the week, the months and the 24 hours
in red and black numbers, apertures for the leap year at 1 and for
the moon phases at 6, outer 1/5th second graduation. Blued steel
skeleton hands with luminous tips, red arrow hand for the alarm.
Cal. 919, rhodium plated, fausses côtes decoration, 34 jewels,
straight-line lever escapement, monometallic balance adjusted
to four positions, self-compensating flat balance spring, shock
absorber, ball-bearing rotor.