細節
ROLEX. AN EARLY SILVER CUSHION-SHAPED WRISTWATCH WITH ENAMEL DIAL
SIGNED ROLEX OYSTER, "ULTRA PRIMA", NO. 6830, CIRCA 1930
Cal. 10 1/2''' nickel-finished Ultra Prima lever movement, 15 jewels, mono-metallic balance timed in 6 positions and all climates, the white enamel dial with luminous Arabic numerals and outer railway minute track, luminous blued steel hands, subsidiary seconds, in three-part cushion-shaped water-resistant-type case with milled bezel, wire lugs, screw down crown and screw back, case, dial and movement signed
32 mm. wide