Unique Memosail Vintage Regatta Yachting Chronograph. Worldwide free registered and insured shipping ! This watch was professionally fully serviced before being offered at our shop. As a Chrono24 Trusted Seller we guarantee the originality of the watch. Memosail swiss manual winding high grade movement calibre 7737 based on 17 jewels and 18000 A/h vibrations per hour , Regatta Yachting Chronograph. Movement was cleaned and serviced. Last service will be remarked on the invoice. Blue original dial in good condition Neutral bracelet / wrist size 18 cm Steel case Case diameter: , without crown 45 mm, with crown 47mm and thickness 16 mm Shipping including black travel watch case- Travelling with expensive timepieces or other valuables can be a real trial for anyone. There are chances they may get damaged. So, it’s essential to keep them safe and secure while travelling. This can be done with the help of our spezial customized travel watch case. "The History of the Memosail Yacht Timer" The Memosail is a yacht timer watch from the 1970’s that is extremely unique - to say the least - in design and history. Its unique blue dial is what captured our founder and lead to his first vintage watch purchase. This post will be the history and incredible story behind the Memosail Yacht Timer. The Memosail history stems from the history of the Ebauches SA company who, in August 9, 1972, filed to registered the name “Memosail” with the US Patent Office. Ebauches wanted to compete with other yacht timer chronographs like the Aquastar company with their 5-dotted timer with the Felsa regatta movement, the caliber 4000N. Below are images of both watches that Ebauche was competing with. In order to create these watches, Ebauches created a new watch brand called Memotime in order to sell their new watch. Leveraging their vast ownership of multiple companies, Ebauches utilized one of their other companies, Valjoux SA, to develop a movement to rival other yacht timers. Earlier that same year (1972), patent CH566052 “Pièce d’horlogerie à mécanisme de chronographe” (loosely translated to ‘chronograph mechanism timepiece’) was filed in Switzerland for the movement that would be used in the Memosail. The movement would be known as the Valjoux 7733/4 which was a modified Valjoux 7737. The patent is written in french, and shows the way in which the movement interacts with the center disc and dial - the timing mechanism of the timer. The modifications that were done to the Valjoux 7737 was to have two teeth on the chronograph wheel. Normally, the chronograph movement would move the minute chronograph counter every time the chronograph hand passed 12 o’clock. By having two teeth on opposite ends of the wheel, the counter would move when the chronograph hand passed 6 o’clock and 12 o’clock. On the image below, item number 8064, the driver wheel for minute recorder, is the major modification of the chronograph movement. This moves the minute counter every time the chronograph wheel tooth passes 6 or 12 o’clock. The minute - recording wheel is a 10 minute counter that counters backwards from ten. In regatta races, it is difficult for boats to line up on a “start line” because of the motion of the water and the danger of having boats so close together. In order to overcome this, boats are positioned in a starting area and a horn is blow or a radio signal is sent. Once this happens the racers have 10 minutes to get their yachts the start position before the race begins. The disc can be seen below - as you can see the gap in the display dial shows 5 pieces of the timing disc between 12 and 5 o’clock. Before the chronograph starts, it displays 10-6 in yellow. As it counts down, 5-1 appear in red and then the letters S-T-A-R-T will indicate when the race should start. The disc actually runs clock-wise unlike other chronograph movements. The disc will continue to rotate until the chronograph function is stopped by hitting the pusher at 2 o’clock, and reset by hitting the pusher at 4 o’clock.The watch itself has a distinct 1970’s design - the first few versions came in a 41mm round case with no lugs. The case was made of chrome plated brass, later made of stainless steel, which made the case very sturdy and resistant to sweat and possible sea water. Ironically, there is no water protection to the crown or chronograph pushers (neither are screw-down) which one could consider a serious design flaw. The brochure below shows the first design and advertisement of the Memosail and the image shows the box and papers that came with the watch. The first few versions of the Memosail had 5th of a second indicators between each second on the outer ring of the watch. Later versions only had indicators for each second that passed by every minute. The inner section of the dial is where the hours and minute hands are located that will tell you the time. It is clear that the focus of the watch is on the timer aspect, which is understandable being that it is competing with other yacht timers. The fact it tells the time is an added bonus. Below are images of the round case design of the watch." Look at the pics,that told more than 1000 words Worldwide shipping. Will be send registered and insured Please look at my other watches to.