Zenith. A very rare stainless steel automatic tonneau-shaped full calendar chronograph prototype wristwatch with moon phases and bracelet
Signed Zenith, Chronograph Automatic, El Primero, case no. SP1205, manufactured in 1970
Cal. 3019 PHC automatic movement, 31 jewels, light grey dial, applied luminous baton and star numerals, luminous hands, Arabic five minute divisions, outer silvered ring for tachymetre scale, three silvered engine-turned subsidiary dials for constant seconds, 30 minutes, 12 hours register and moon phases, windows for day, month and date, tonneau-shaped water-resistant type case, screw back, two round chronograph buttons in the band, stainless steel Zenith link bracelet and deployant clasp stamped "GF" for Gay Frères and 3.69, case, dial and movement signed
38 mm. length
Zenith. A very rare stainless steel automatic tonneau-shaped full calendar chronograph prototype wristwatch with moon phases and bracelet
Signed Zenith, Chronograph Automatic, El Primero, case no. SP1205, manufactured in 1970
Cal. 3019 PHC automatic movement, 31 jewels, light grey dial, applied luminous baton and star numerals, luminous hands, Arabic five minute divisions, outer silvered ring for tachymetre scale, three silvered engine-turned subsidiary dials for constant seconds, 30 minutes, 12 hours register and moon phases, windows for day, month and date, tonneau-shaped water-resistant type case, screw back, two round chronograph buttons in the band, stainless steel Zenith link bracelet and deployant clasp stamped "GF" for Gay Frères and 3.69, case, dial and movement signed
38 mm. length
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