In 1992, Franck Muller added a perpetual calendar to

the LEP movement. The watch was presented at that year's Baselworld and sold to

a collector. The new owner then asked Paul Gerber to add a small flying

tourbillon which he did in 1995, incorporating the original balance and spring.

In 2013, at the same collector's behest, Paul Gerber completed the movement

with a split-seconds flyback Chronograph, jumping minutes, and power-reserve

indicators for the movement and the striking mechanism, thus earning the watch

its place in the Guinness Book of Records.