The Valjoux 7750 Chronograph Is a Timekeeping Icon

1970 was a year of great ups and downs for the mechanical chronograph. The vaunted Omega Speedmaster helped bring the crippled Apollo 13 space capsule back to Earth. James Bond’s Rolex Cosmograph helped 007 foil Blofeld on a mountaintop lair in On Her Majesty’s Secret Service. And it had been only a year since the...