ROLEX REF. 3136 OYSTER LIPTON STEEL Oyster Watch Co., Geneva, case No. 102047, Ref. 3136. Made in the 1930s. Fine and rare, water-resistant, stainless steel mid-size wristwatch. Two-body, polished and brushed, screw-down case back and crown, inclined bezel, concave lugs, back engraved inside: R.W.C Ltd and international Patent Numbers. Two-tone silver with luminous Arabic numerals, outer minutes and seconds divisions, subsidiary seconds dial. Luminous blued steel baton hands. 10 1/2``` rhodium-plated, fausses cotes decoration, 15 jewels, straight-line lever escapement, monometallic balance, self-compensating flat balance spring, index regulator.