In the static display at the 1977 Paris Airshow, this was the first Falcon 50 (or Mystere 50 as detailed on the engine) off the production line, and is now in The Conservatoire de l'Air et de L'Espace d'Aquitaine. Scanned from a slide.

The Falcon 30 was an unsuccesful attempt to make a short-haul airliner out of the Falcon 20, with a wider and longer fuselage seating 30 passengers. Photo from: Dassault

The unique Falcon 30 demonstrator appearing at the 1974 SBAC show. In the mid sixties, Dassualt had plans to scale up the Mystère 20 design to carry 32 - 40 passengers and Eastern Airlines even expressed an interest in buying between 20 and 40 examples. The project was abandoned in 1975 thanks to high engine noise and the oil crisis, but the airframe is preserved at Bordeaux-Merignac

The prototype Falcon 50 seen at the 1975 Paris Airshow