"The manual-winding movement was developed in collaboration with Manufacture AMT, the high-end division of Sellita. Using a Sellita AMT5100 base, the manual-winding EB 280 calibre controls the flyback chronograph with a column wheel. Extensively modified, the movement features a special lever that allows the chronograph reset pusher to be displaced coaxially with the crown. Another bespoke touch is the shield-shaped bridge decorated with Côtes de Genève. Known as a poinçon de maître, or a maker’s mark, Eberhard registered its shield in 1892. With a frequency of 28,800vph, a robust 62-hour power reserve, the movement is further protected by an Incabloc anti-shock device, an anti-magnetic Nivaflex mainspring and features hacking seconds."
I plan on pulling the trigger at some stage on one of these - not sure which one. From time to time they appear on some websites, don’t sell and then are “rested” for a while. I really love the Minerva movement in this one - something I’m missing in my collection of bi-compax lateral clutch chronographs.