Continuing my mini-sell off today with this beautiful early 1970's Omega F300 Electronic Chronometer 198.031. The midnight blue dial is in great condition with raised steel baton indices. Red cartouche with a steel Omega logo and white and silver stick hands complete the vintage look. The steel case is 38 mm in diameter and in very good shape with circular brushing and clean chamfers. The fully signed screw case back has some scratches. Running an electronic cal. 1260 with a 32.9 million serial number. It is working very well and very accurate, setting smoothly and with the quick set date function operating as it should. I bought this one without knowing too much about and as such only realised later that this reference should have a day/date dial. So a previous owner has changed it for a date only F300 dial...which although not correct is a cleaner design I actually prefer and doesn’t hinder the operation in the slightest. I have taken this into account with my price. Selling this one head only but at buyers request I can fit a black leather strap. €495 net to me will include worldwide Track & Trace shipping. Payment by bank transfer or PayPal for well established forum members only. Any question?...Just ask!
I'm a big fan of tuning fork movements. They were a huge advance over lever escapement movements. As a timekeeper they are very stable and can be adjusted to less than 0.5 s/day. Also, the tininess of some of the parts is impressive. This is a picture of the Bulova Accutron movement from my Astronaut. Those two pawls are tiny. One of them is attached to the tuning fork and its jewel advances a tooth on the wheel 360 times a second. My recollection is the tooth height is only 50 microns (or 0.002"). It's very impressive engineering.