OMEGA SPEEDMASTER 57 CO-AXIAL AUTOMATIC STEEL
Omega, "Speedmaster 57, Co-axial, Chronometer", case No.
85589753, Ref. 33110425101002. Sold on July 31st, 2015.
Fine, self-winding, water-resistant, stainless steel Chronometer wristwatch with round button co-axial chronograph, registers,
date, steel bezel with tachometer graduation and a stainless steel
Omega link bracelet with double deployant clasp. Accompanied
by the original warranty card, fitted box, 3 extra links and
instruction booklet.
Three-body, asymmetric, polished and brushed, lyre lugs,
sapphire crystals, tachometer graduation on the bezel to 1000
units per hour.
Black with luminous baton indexes, outer 1/5th seconds
divions in beige, aperture for the date at 6, subsidiary dials for
the seconds and 12-hour registers. Luminous steel broad arrow
hands.
Cal. 9300, rhodium-plated, double main spring barrel,
straight-line lever escapement, monometallic balance, shock
absorber, silicon hairspring.