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Longines Quartz CHRON, Ref. 8444

CHF 3,000


Very rare LONGINES Ref. 8444 Quartz Chron wristwatch with unique hybrid movement Cal. 6412, made circa 1970s.

After six years of research in CEH consortium, the first prototype, the Beta-1, was produced in 1966, using a 8192 Hz quartz oscillator mounted in an in-house integrated circuit. The Beta-21 was created in 1969, only 6,000 or so of these early movements were ever made. Longines created their own in-house very innovatine movement,  rather than a straight Beta 21, the “Quartz Chron” was something of a hybrid of Beta 21 with Bulova’s Accu-quartz technology. It used both a quartz timer and tuning fork for timekeeping.

Quartz jewelled movement, silvered dial, applied indexes and luminous indexes, inner minute track, luminous hands, aperture for date; stainless steel cushion-form case, screw-down back, crown at 4 o’clock; case, dial, and movement signed, case number 755999; with a new “vintage-style” leather strap.

Dimensions 42 x 49 mm including lugs, bracelet will fit up to 21 cm wrist.

Watch is in overall great condition, running and ready to wear or gift!


ReferenceRef. 8444
YearCirca 1970s
MovementHybrid Beta21&Bulova
Case materialStainless Steel
Case size42 mm
Braceletnew leather strap
Featuresrare movement
Box/Papersno box, no papers


In fully working order. Practically mint, minor surface scratches and scuffs through the age.


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