Does anyone know how many of these 44.25mm Moonwatch "Numbered Edition" enamel dials were made?

Ref. 311.30.44.50.01.001 -- I haven't seen any in the thousands but there also aren't that many online in general. Pretty unique version of a Moonwatch:

- https://www.chrono24.com/omega/omeg...-enamel-dial-numbered-edition--id27988312.htm