As shown in photos a wonderful design mini TV radio, from the 1970’s, no power supply or battery included, the battery case has had the batteries removed previously, presumably because they had leaked. I think it would not be too difficult for a skilled DIYer to put new batteries in the battery case. I hooked it up to a bench power supply with 4.5v and the tube powers up, see the photos. So it is sold strictly as spares or repair or prop on this basis.
eBay