Accompanied by Patek Philippe Extract from the Archives confirming manufacture of the present watch in 1888 and its subsequent sale on 28 June 1889. Furthermore delivered with the copy of a letter from Patek Philippe dated 21 December 1981 stating that it was sold to Serge Maximovitch.
To the best of our knowledge, the present watch has never been offered in public before.
It is interesting to note that this watch was made with a perpetual calendar mechanism already in 1888, a year prior to the official Swiss patent no. 1018 granted in 1889 for Patek Philippe's perpetual calendar mechanism granted on 23 May 1889.
The advantage of a perpetual calendar mechanism designed for pocket watches lies in its ability to produce both instantaneously and simultaneously the jump in days, dates, months and lunar phases.
Able to perform in all dimensions, the mechanism is characterised by its combination of its wheel, which carries a bevelled pin, its heart-piece and its levers that simultaneously cause its star-wheels to come into action.
For a drawing and description of this mechanism see Patek Philippe by Martin Huber & Alan Banbery, p. 56, pl. 50.