1950's Zenith L2258E console b&w rescued yesterday

[pac.attack76]

Picked this set up yesterday making it the oldest in my collection. Previous owner said he thinks he remembers his mom and dad buying it new in '55. Said it still worked last time he plugged it in. Brought it home and cleaned the inside and out. Haven't tested yet. Anything i should worry about before plugging in? What year was this one made? I bet Zeno knows. Chassis is 19L27.