1972 Omega Seamaster Chronometer f300Hz “Cone”
 
A distinctive and technically interesting Omega Seamaster Chronometer from 1972, powered by the well-known f300Hz electronic tuning fork movement.
 
Often referred to as the “Cone” or “Sandpile” due to its unusual case shape, this model represents Omega’s early move into electronic timekeeping. It houses the calibre 1260, commonly known as the “hummer”, which operates using a vibrating tuning fork rather than a traditional balance. The result is a smooth sweep of the seconds hand and a characteristic faint hum in operation.
 
The stainless steel case measures approximately 41.4mm and has a strong wrist presence. It remains in good overall condition with general signs of wear, including light scratches and small dings consistent with age. The case back is signed with the Omega hippocampus in crisp relief.
The silver dial is original and generally well preserved, with some light, even ageing visible on close inspection. Applied hour batons, with the red Omega logo at 12, and a red sweep seconds hand. Day and date aperture at 3 o’clock, both functioning as expected.
 
Fitted with the original Omega stainless steel bracelet.
 
Originally rated to 60 metres, though, as with all vintage watches, water resistance should not be relied upon.
 
This is a solid and wearable example of an interesting period in Omega’s history, offering something a little different from the more conventional mechanical models.
 
Additional Information:
Day and date are adjusted via the crown using a bi-directional quickset system characteristic of this movement.