Around the year 2000, 500 pieces of this rosegold Reverso were made for very few collectors around the globe. Not only is this timepiece rare, it is exceptionally complex and it is quite amazing that they were able to “fit” the movement of a perpetual calender in such a small Reverso case and to “distribute” the perpetual calendar functions over two dials on the front and back. I do not know of any other perpetual calendar with such a setup.
What I find amazing is that the automatic movement in this reference – Q2152420 is – Q2152420
is able to power two dial sides with so many complications.
On the Jaeger Forum someone wrote a nice contribution worth a read.