With Patek Philippe Extract from the Archives confirming production of the present watch in 1988 and its subsequent sale on April 22nd of the same year. Further accompanied by a Patek Philippe winding box, leather folder, Certificate of Origin dated April 1988 and instruction pamphlet.
To the best of our knowledge the present watch has never before been offered in public.
Reference 3941 is possibly the rarest variant of the 3940 family of automatic perpetual calendar wristwatches. Since the glazed backs were not numbered, Patek Philippe chose instead to apply the case number inside the upper case part, underneath the bezel.
Manufacture of references 3940 and 3941 was launched in 1985, the difference between the two reference numbers being their backs:
- ref. 3940: plain snap on back
- ref. 3941: glazed snap on back
To respond to their customers increasing demand for the two backs, Patek Philippe produced the model as of around 1988 with both the plain and the glazed snap on back. Production of reference 3941 was discontinued in 1990.
This model is illustrated in Patek Philippe Wristwatches by Martin Huber & Alan Banbery, second edition, pp. 292 & 293.