[Jeffhs]

Looks to me as if the picture might be upside down as well, as the Zenith crest on the cabinet looks as if the points of the crown are pointing down, rather than up. That or else, as Anthony noted, the set itself may be resting on its top (which, now that I think of it after having looked more closely at the image, makes sense).

BTW, that set's cabinet looks as if it could use refinishing. The set itself looks as if it's been sitting in a damp basement or garage for years or decades. The chassis will probably need the usual going-over as well (new caps, etc).

I wouldn't even think of plugging this in unless it was through a Variac or, at the very least, a 100-watt bulb in series with the AC line cord. The Variac is the preferred method as, of course, the voltage can be brought up slowly from zero and brought down quickly if smoke, sparks or other evidence of trouble are noted.