HarlequinCasts

Correct, someone else pointed that out on Reddit that it must have been modded to work. I saw the multitude of Warranty/Service information that came with it and put two and two together. No that was not in the box. I had acquired that much earlier from someone else. Never had a 5200 to test it on but it was too good to pass up. Serial number is pictured Here and is 0001404EP023 Which I gather means it was 1404th made in El Paso... 2nd week of 1983? And the service sticker does say New Jersey, and I found it at a Delaware flea market so I'd say you are spot on with the New England

Greetings all, I've been a collector for quite a while but only recently got into Atari. A few weeks ago I stumbled upon a complete 5200 system with a good amount of peripherals and games complete in the box. I took the time to document it all in an Imgur album which I then annotated and posted on Reddit. This seemed like a good excuse to pop in here and try to share it with you all since I had been reading the forums for a while now but have never posted. Atari 5200 Flea Market Find I restored a 2600 before, but this was my first experience with a 5200, so please excuse any mistakes. It helps that the system is basically unused and that many of the peripherals and components are pristine. I know my video setup is not ideal, especially the flat screen, so sorry about that. I'd imagine this collection is not nearly as interesting to people who deal exclusively in 5200 stuff, but I wanted to share it anyways. Anyhow, please let me know what you think, or if I can provide any other details. Cheers