A RARE GENTLEMAN'S 18K SOLID GOLD LONGINES EPHEMERIDES SOLAIRES WRISTWATCH CIRCA 1989, REF. 5234, SPECIAL EDITION OF 200 PIECES TO MARK THE 100TH ANNIVERSAY OF THE WINGED HOURGLASS TRADEMARK D: White porcelain dial with applied Arabic numerals, apertures displaying times of sunrise & sunset, date, solar declination north & south of equator. M: 25 jewel automatic movement, signed Longines & numbered, calibre L 640.1. C: Circular case with patented rotating bezel that indicates the months and Equation of Time curve, signed Longines & numbered, hallmarked, original crown, case diameter measures approx. 37mm. S: Original Longines leather strap & pin buckle.