ROLEX REF. 16013 DATEJUST STEEL and GOLD Rolex, "Oyster Perpetual Datejust, Superlative Chronometer Officially Certified," case no. 5496893, Ref. 16013/16000. Made circa 1978. Fine, center seconds, self-winding, water-resistant, stainless steel and 14K yellow gold Chronometer wristwatch with date and a stainless steel and 14K yellow gold Rolex "Jubilee" bracelet. Three-body, polished and brushed, screwed-down case back and gold crown, fluted bezel, crystal with cyclops lens, back engraved: J.H.C.L 108L239X722 11-26-78. SatinÈ silver with applied yellow gold baton indexes and luminous dots, aperture for the date. Luminous yellow gold baton hands. Cal. 3035, rhodium-plated, 27 jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions and temperature, shock absorber, self-compensating freesprung Breguet balance spring, Microstella regulating screws, hack mechanism.