Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT    Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT

8444 Quartz Chron wristwatch with unique hybrid movement Cal. 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 Bulovas 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 oclock; 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! Don't let this truly unique and eye-catching find pass away. Please check my other listings (swiss watches, clocks, etc) HERE. Please view all the pictures carefully as they form an integral part of the description. Any defects not mentioned but visible in the pictures will be considered as described. This is from a smoke-free and pet-free environment. The item "Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 8444, MINT" is in sale since Thursday, May 2, 2019. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Wristwatches". The seller is "grailium" and is located in Genève. This item can be shipped worldwide.
  • Gender: Men's
  • Modified Item: No
  • Country/Region of Manufacture: Switzerland
  • Watch Shape: Tonneau/Barrel
  • Style: Vintage
  • Caseback: Screwback Case
  • Case Material: Stainless Steel
  • Dial Style: 12-Hour Dial
  • Movement: Quartz (Battery)
  • Band Material: Leather
  • Year of Manufacture: 1970-1979
  • Features: Swiss Made
  • Band Type: Two-Piece Strap
  • Band Color: Black
  • Age Group: Adult
  • Display: Analog
  • Lug Width: 22 mm
  • Brand: Longines
  • Case Size: 42 mm
  • Serial Number: 755999
  • Face Color: Silver

Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT    Ultra rare Longines Quartz Chron Beta 21 Watch, Cal. 6412 CEH, Ref. 8444, MINT