Important Watches, Collector's Wristw...

Hotel Richemond, Geneva, Oct 13, 2001

LOT 83

Certina "Biostar Electronic", Grenchen, No. 8644505, Ref. 7506.001. Produced in the 1970's.Unusual center-seconds, water-resistant, stainless steel and yellow gold-plated electronic gentleman's wristwatch with date and indication of the body's "bio-rhythms".

C. two-body, bicolor, polished and brushed, steel screwed-down case back, gold-plated bezel, band and lugs. D. champagne with applied yellow gold and black indexes, aperture for the date near the 3, below the twelve sector aperture for the polychrome data:- Red : rhythm of the body for 23 days- Blue: psychical rhythm for 28 days- Green: intellectual rhythm for 33 days."Bâton" tritium-coated and black gold hands. M. Cal. 28-353, electronical Dynotron movement, 13 jewels, 28800 oscillations. Inside the back a special space to engrave one birthday date.Dial, case and movement signed.Dim. 39 x 43 mm.