http://cgi.ebay.com/TV-Vintage-RCA-t...QQcmdZViewItem
This set has been modified with a 14"? rectangular tube!
There was a mod made to install a 12" round tube in these and that's what the mask on this one looks like, so did someone modify a 12" mask to accomodate this tube or was this a later kit?
It looks like a clean installation, the gold mask even follows the curve of the knobs.