Franck Muller Aeternitas Mega 4 – $2.7 million

For its most complicated watch ever, Franck Muller is indebted to one of the most experienced complicated-watch makers in the industry—Pierre-Michel Golay, who built a perpetual calendar/grande sonnerie for Gérald Genta in the early 1970s. Golay used the tried-and-true method of designing on paper to create the massive Aeternitas Mega 4. Like his seminal work […]