Patek Philippe's reference 3445 was the brand's first serially produced automatic waterproof simple calendar wristwatch. Released in 1961 and manufactured until approximately 1981, it was a watch with a modern aesthetic that perfectly suited the well-dressed business man. Available in yellow, pink and white gold, as well as platinum, the case measured 35mm in diameter and was fitted with the outstanding caliber 27-460M (Monodate) featuring a date window at the 3 position. Over the ensuing years, three series were made with the first similar to the present watch, the 2nd series made in the late 1970s featuring a higher bezel to accommodate a sapphire crystal, and the third series featuring a sapphire display back. The model was also made with integrated bracelets, as well as with Stern Frères dials in silver, champagne, blue and later with grey dial with white Roman numerals.

The present watch is a lovely and rare example with its white gold case and diamond-set numerals (heures brilliants). The exceptional original condition is further enhanced by the addition of the original Certificate of Origin which is signed and dated by Chronometrie Beyer, Zürich, August 30, 1963. The majority of the reference 3445 were produced in gold, and the white and diamond dial models are very rare, with only 4 known to date. This wristwatch is a classic and has a versatility that makes it both a formal dress watch, but also a stunning everyday watch. For collectors of both simple and complicated timepieces, this unusual and highly attractive Monodate presents a rare opportunity.