This is a IBM 704 introduced by IBM in 1954. 1:16 scale model, hand made in mostly polystyrene.
The IBM 704 was the first mass-produced computer with floating-point arithmetic hardware. The 704 used vacuum tube logic circuitry and core memory.
@6502B - A predecessor, the ANSF Q-7 was used for SAGE. It was programmed at SDC (Santa Monica) and I later worked in the building that once housed a Q7 (and later the Q32.)