Could be the Lange Saxonia Handwind with 37mm; or the Dornblüth 04.0. Both meet all specifications.
Not round but otherwise meeting all criteria would be a Wempe Chronometerwerke tonneau handwind.
Another option without swan neck or chatons would be a watch from Nomos.
Not round but otherwise meeting all criteria would be a Wempe Chronometerwerke tonneau handwind.
Another option without swan neck or chatons would be a watch from Nomos.