With Patek Philippe Extract from the Archives confirming production of the present clock in 1953 and its subsequent sale on September 25th, 1959. The clock was serviced by Patek Philippe in 2007 and is accompanied by a copy of the receipt.
To the best of our knowledge the present clock has never before been offered in public.
Always at the forefront of horological innovation, Patek Philippe opened its Electronic Division in 1948. Exploring photoelectric, electronic and nuclear timekeeping this department produced the groundbreaking solar clock, the first of its kind.
Featured in Life magazine in 1955 the Patek Philippe solar clock went on a celebrated tour throughout the United States and was eventually retailed in America by Tiffany & Co beginning in 1957.
For a further discussion of photoelectric clocks and Patek Philippe's Electronics Division see Patek Philippe in America by John Reardon p. 162.