Brand: Revue Thommen Gender: Unisex Case material: Steel Model: Astrowatch Reference number: Jaap Venker Astrowatch limited edition, 1500 copies. Period: 1970–1979 Special and uncommon astrological pocket watch, designed by Dutchman Jaap Venker and sold from the 1970s up to 1984 in an edition of 1,500 copies, in total. (This serial number is 244) The watch was manufactured in Switzerland by the renowned timepiece manufacturer Revue Thommen. The steel watch case has a diameter of 50 mm. In accordance with the so-called sidereal time the clock is permanently nearly 4 minutes fast per day. Because, entirely unlike your regular clock, a time interval between two upper culminations of the First Point of Aries applies here. And that is, to be exact, 23 hours 56 minutes and 3.4 seconds. In addition, the indicator turns counter-clockwise. The gorgeous dial displays the zodiac disc and the visible part of the night sky. This watch does not have daylight savings time and therefore never requires adjustment. A unique watch which is highly sought-after worldwide. The watch weighs 68.6 grams, the diameter is 68 mm. The thickness is 11 mm. Complete with glass bell jar and silver watch chain and USER MANUAL.