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CEH, Beta 21 by Longines, Ref. 8444.1

CHF 3,000


Very rare CEH (Centre Electronique Horloger) Ref. 8444-1 wristwatch cased by Longines, with unique Beta 21 movement, made circa 1970s.

The purpose of the C.E.H. was to focus on researching, creating, and producing a quartz movement efficient enough, reliable enough, and accurate enough for the next generation of watchmaking. 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 and it was agreed by the 20 Swiss houses to produce 6,000 of theses movements. Later that year, a few hundred of the Beta-21 watches were released at Basel, setting a new record at the Fair. The Beta-21 movement was accurate to 5 seconds per month, which was far superior to any automatic and manual-winding watch at the time.

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 755897;

Dimensions 42 x 49 mm including lugs, bracelet circumference 185 mm.

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


BrandCEH, cased by Longines
ModelBeta 21
ReferenceRef. 8444-1
YearCirca 1970s
MovementBeta 21
CalibreCEH -B21
Case materialStainless Steel
Case size42 mm
BraceletSSteel, not signed
Featuresrare movement
Box/Papersno box, no papers


In fully working order. Good vintage condition, surface scratches through the age on the case and crystal. Visible scratch on the bezel at 1h00 position and few scratches/damages on the case back. No box, no papers.


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