PATEK PHILIPPE REF. 3970 PERPETUAL
CALENDAR CHRONOGRAPH YELLOW GOLD
Patek Philippe, Genève, Ref. 3970E.
Made circa 1990.
Very fine and rare, astronomic, water-resistant,
18K yellow gold wristwatch with round button
chronograph, register, perpetual calendar and
moon phases.
Three-body, solid, polished, screwed-down
transparent case back, concave bezel, curved
and fluted lugs, sapphire crystals.
Matte silver with applied yellow gold bâton
and pyramid indexes, subsidiary dials for the
seconds and the 24 hours, the 30-minute register
and the leap year, graduation for the days
of the month, outer 1/5th seconds scale, aperture
for the days of the week, the months and
the moon phases. Yellow gold baton hands.
Cal. 27- 70 Q, stamped with the Seal of
Geneva quality mark, rhodium-plated, fausses
côtes decoration, 24 jewels, straight-line lever
escapement, Gyromax balance adjusted to
heat, cold, isochronism and 8 positions, shock
absorber, self-compensating free-sprung Breguet
balance spring.