Diameter: 29mm (measured precisely via calipers) Compatible Model: Fits ETA 2892-2 / 2892-A2 movements equipped with a modular Triple Calendar / 24H plate (such as Soprod 9000 or Dubois-Dépraz modules). Case Fitment: Ideal replacement or project dial for standard 36mm–38mm mid-size and gents' cases from the 1990s.