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Thanks everyone for the great compliments.
When I spotted the set Saturday at the sale, I knew it had to be special. But I was staying with my in-laws and had a bunch of commitments and no way to move it. It was late in the day, so I was fairly hopeful I could get back. Needless to say, I had a restless night of sleep and was back first thing Sunday.
Good observation that chassis was setup to take a power transformer. You can see that there are knockouts for a line cord and cans.
I've been wondering about convergence controls too. I'll be frank, I don't know a lot about round tube color sets. My next oldest color set is a Zenith portable hybrid from about '70. I was beginning to think that roundies didn't require convergence adjustments based on the geometry of the tube. I'm sure somebody here can set me straight. Regardless, I haven't been able to find many service controls. I'm a little concerned that something might be missing, but I can't see anything obvious. This brings up the biggest issue so far; lack of a full model number. I can't even find where a tube layout chart may have been pasted. I've searched Sam's with what I believe to be the chassis number with no results. I've googled imperial 330 and found just a couple of hits. Somebody here had one in their collection and somebody restored one in an antique radio forum. Any help in this quest for service literature / schematic would be greatly appreciated.
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