I'm 46 now.....and my Dad gave me one of these Sony 5-303 'Tummy" TVs from his very modest collection when I was like 30. It has stayed in working order for all this time, and I do turn it on every few months just to see it play. It has a very odd "warm" picture than all the other "80s to 90s" little micro TVs I've recently run across on ebay and wherever.
Mine has the original AC cord (found this handy to work on a recent Sony 8-301W find). Has the little blue case it came in and it's manual/cord fits in a little elastic pouch inside. I'll ALWAYS keep the little 303 seperate from the "hobby" collection....because Dad gave it to me. I'm not sure how much work he put into it before I got it. It runs REALLY good, so maybe it was just a really decent set, or it was a recapping project on his part. I have never found any reason to try and open it myself yet. These Sony sets appear to have distinctive paint work that I wouldn't have the first clue how to duplicate...so I just keep it nice and don't mess with it. Mine is without the UHF unit, so it swayed my decision when I put together a "whole house transmitter". I keep the signal at the very top of VHF high so THIS set in particular can still live
JUST recently lost Dad, but acquired his little collection of micro TV sets...and started adding to it. These are by FAR not "antique" in any way. The oldest one is the recent 8-301 find, which is going to be my first REAL restoration.
I live in a little 2 bedroom flat.....so I won't really ever have the room in the foreseeable future to take on any actual antique sets. I'll have to be happy with these little "micro" sets....which appear to all be transistor, from the 60s and up.