Thanks for the tip captainmoody...the very last Zenith tube model huh? I sure would like to find a resource book or website with all that information. Maybe I should start my own? Nah...like I need more to do!
The Z316L/Z316W resembles this model X323. Other than the wood cabinet, they look identical.
I bought this about 6-months ago. It is kind of a gooey mess because someone brushed gobs of varnish all over it, splattering it all over the metal face plate too. It does sound nice tho...I'll get to it one of these days.