With Patek Philippe Extract from the Archives confirming production of the present watch in 1955 and its subsequent sale on October 26th of the same year.
Patek Philippe produced the reference 2525 from 1952 until approximately 1962. The timepiece was released model with both the caliber 10 200 and the more rare 12 400.
Reference 2525 is illustrated in Patek Philippe in America, Reference Guide, by J. Reardon, Vol. 1, p. 75.