I have the main unit.
type game console
year 1979
The Mark TVG 57253 — Budget European Console
The Mark TVG 57253 was a budget television game console from the late 1970s — one of the many Pong-derivative devices produced for the European budget gaming market using General Instrument’s dedicated game chips. The Mark brand was among the numerous generic trade names used to sell Asian-manufactured gaming hardware through European general retail channels. These budget consoles brought basic ball-and-paddle gaming entertainment to households throughout Europe at prices accessible to families who could not afford the more expensive American systems like the Atari 2600.