DE BETHUNE PIECE UNIQUE TOURBILLON
MINUTE REPEATER PERPETUAL CALENDAR &
EQUATION OF TIME PINK GOLD
De Bethune, "Pièce Unique, Tourbillon, Rèpètion à Minutes,
Equation du Temps, Quantieme Perpetuel". Made in 2002.
Extremely fine and unique, large, minute-repeating, 18K pink
gold manual-winding wristwatch with one-minute tourbillion
regulator, perpetual calendar, equation of time and an 18K pink
gold De Bethune buckle. Accompanied by a technical
description and by a certificate of authenticity.
Three-body, solid, polished, curved bezel, conical lugs, flat
band with date corrector at 2, octagonal crown, transparent
snap-on case back, sapphire crystals.
Satiné and hand-guilloche silver with painted radial Roman
numerals, outer minute track, the center with equation of time
graduations in the upper half, apertures for the date between
7 and 8 and the months in Roman numerals between 4 and 5.
Blued steel Breguet hands, pink gold sun equation of time hand.
Rhodium plated with cotes de Genève decoration, 20 jewels,
wolf's tooth winding, lateral lever escapement, monometallic
balance adjusted to 5 positions, self-compensating Breguet
balance spring, A-form polished steel tourbillion carriage with
index regulator, brushed steel bridge, repeating on gongs activated
by a slide on the band.