Collector's Pocket Watches, Wristwatc...

Geneva, Apr 14, 2003

LOT 608

Certina "Biostar Electronic", Grenchen, No. 9357123, Ref. 7501.050. Produced in the 1970's. Unusual center-seconds, egg-shaped, water-resistant, stainless steel electronic gentleman's pocket watch with date and indication of the body's "bio-rhythms".

C. two-body, brushed, screwed-down case back, rounded bezel, top winder. D. eccentric, satiné anthracite with applied steel indexes, aperture for the date on the 3, under the 12, sector aperture for the polychrome data; Red : body rhythm for 23 days- Black: psychic rhythm for 28 days and intellectual rhythm for 33 days. "Bâton" tritium-coated and steel hands. M. Cal. 28-353, electronical Dynotron movement, 13 jewels, 28800 oscillations. Inside the back a special space to engrave one's birthdate. Dial, case and movement signed. Dim. 41 x 46 mm.