The Heuer 510.501 or 510.502 should be a serious contender on your list. Basically the same case as the Heuer Pasadena which was powered by a Valjoux 7750, the Lemania models had the fluted Chrono pushers, similar to the contemporary Autavia. A decent 510.xxx, complete with its original bracelet is a nice watch. Check our Stewart's "Heuerville" site for details.