Bulova Accutron M7 - 1967
Steel - Kinetic Accutron system (see below)
Mouvement Bulova 218 - Freq 360Hz
(This movement equipped the Universal-Genève « Unisonic »)
Silver genuine dial signed
Golden applied indexes
Central seconds hand
New glass (replaced for the sale)
Diameter: 34 mm. (36 mm. with crown)
Thickness: 11 mm.
Original crown at 04:00 (signed)
Screwed stainless steel back numbered (D19197 / M7*)
New black leather strap; steel clasp
+/- 23 cm. watch incl.
This watch is in excellent condition
Infime signs of wear
The watch has been serviced in January 2023 (+ new battery)
It is of course in perfect working order and keeps perfectly time as explained in the short historical note below.
Rare in this condition...
Bulova’s "Accutron" watches, appeared in October 1960. The tuning fork was powered by a one transistor electronic oscillator circuit, so the Accutron qualifies as the first « electronic watch ».
Instead of the ticking sound made by mechanical watches, the Accutron had a faint, high pitch hum which came from the vibrating tuning fork. The Accutron was guaranteed to be accurate to a minute per month, or 2 seconds per day, considerably better than mechanical watches of the time.
Bulova made its last tuning fork movement wristwatches in 1977.
* The date code: located on the back of the case, it consists of a letter followed by a number. The letter is the decade (M=1960s, N=1970s) and the number is the specific year within that decade.
In our case, M7 = 1967
Price: 680 €