Venus 175
Legendary movement manufacturer Venus created the caliber 175 in 1942. It was based on the Venus 150, which was released in 1938. The 175 stayed in production until 1960. During this time, Venus produced several versions such as the Venus 184 with date, moon phase, and hour counter, or the Venus 189, a split chronograph with date and hour counter.
However, the base of all of them was the caliber 175. We are talking about a manual wind, column wheel, 17-jewel chronograph movement with an 18,000vph operating frequency. Basic models had 2 sub-dials; running seconds at 9 and 30-min counter at 3. More complicated versions also had a third sub-dial for a 12-hour chronograph register. Throughout its close to 20 years of lifespan, many prestigious brands used the Venus 175 caliber. The most recognizable name of all is probably Breitling. Others included Grana, Tavannes, Arsa, or Mulco.
Fratello watches