ZERO-X
From the 1966 MGM / UA Feature Film ‘THUNDERBIRDS ARE GO!’.
The Zero-X is a multi-stage spaceship - the wings and nose section detach, so there would be some interesting modelling possibilities. If you have seen the film you will be familiar with the elaborate take off procedure where the sections are brought together. … a nice diorama possibility.
Even at 1/600th scale this model would be around 20” (47cm) in length, with a wingspan of about 10” (20cm).