HEUER very rare gents wristwatch with Tidal Indicator model Solunar, Switzerland around 1950, chromed metal case, screwed down stainless steel case back, original duoton- dial, display of hours, minutes, sweep seconds & tides at 6, correction at 4, 17 jewels, lever movement, base calibre AS 1188, dial, movement & case signed, diameter approx. 36 mm, rare good & collectable condition, condition 2