Thanks for posting the pictures of your new SC set. I think you may have a 3C64-E Early American Consolette as pictured on page 2 of this brochure. They list the models at the lower right. Basically it's in the same cabinet as the picture Steve posted.
http://www.earlytelevision.org/pdf/S...n-brochure.pdf
[edit] I just noticed the cabinet dimensions are likely different and they mention only one speaker for the Consolette? But the front panel looks like a match. Normally Setchell Carlson has the model number stamped on the back cover.