This is an Atari 2600 with 24k gold plating. The casemod was made by Urchin Associates, as part of a project called “Gold Mine, All Mine”.
“The Atari 2600 is a video game console released in October 1977 by Atari, Inc. It is credited with popularizing the use of microprocessor-based hardware and cartridges containing game code, instead of having non-microprocessor dedicated hardware with all games built in. “