ROLEX REF. 6556 TRU-BEAT STAINLESS STEEL
Rolex, "Oyster Perpetual, Tru-Beat, superlative Chronometer officially certified", case No. 139400, Ref. 6556. Made in 1956.
Very fine and very rare, water-resistant, stainless steel wristwatch with dead-beat center seconds and a stainless steel Oyster riveted
bracelet with deployant clasp.
Three-body, polished and brushed, inclined bezel, screweddown
case back and crown.
Satiné silver with applied steel indexes, outer minute/ seconds
divisions. Steel dauphine hands.
Cal. 1040, rhodium-plated, 26 jewels, straight-line lever escapement,
monometallic balance adjusted to temperatures and 5 positions,
shock absorber, self-compensating Breguet balance spring.