Rolex. A rare stainless steel manual wind chronograph wristwatchModel: Oyster MonobloccoReference: 4500Date: Circa 1946Movement: 17-jewel manual wind, Glucydor balance, column wheel chronographDial: Silvered, lumino filled alternating Arabic and dart hour markers, black inner 1/5th second divisions with Arabic numeral 5 minute markers, blue outer telemeter scale, black outer tachymeter scale, subsidiary dials at 3 and 9 for seconds and minute recording, blued steel pointed baton hands with lumino inserts, centre chronograph handCase: Brhed and polished round, screw down back, screw down Oyster crown flanked by twin phers, No.497400Strap/Bracelet: Brown associated alligator leatherBuckle/Clasp: Associated steel buckleSigned: Case, dial & movementSize: 35mmFor further information on this lot please visit theProvenance: Rolex produced only a limited handful of Oyster chronographs featuring jt a 30 minute register as opposed to including a 12 hour register as well. First introduced in the 1940s, the reference 4500 is one of these rare chronographs and was available to purchase in 4 materials - yellow gold, rose gold, steel and steel and gold.