It's a model TV-709 from 1948. The model TV-707 was the blonde version. The back of the chassis had ink stamps for all the controls and the model number was just above the serial number label. Unfortunately the label was lost on my set many years ago so I don't know what serial number it is. You can see my original sales brochure on Tom's site at :
http://www.tvhistory.tv/1946-49-AUTOMATIC.htm
Darryl