Zenith Porthole Pricing

[Ampico-kid]

Hello All;
New guy here to this forum. Happy to be a member and anxious to trade "war stories" with all of you.

Just beginning to collect some early black and white TV's (I have a few Predicta's, a couple of early 50's Admirals, a late 40's Andrea, a mid 50's RCA, and a late 50's Zenith) and have a question for you regarding the pricing of the Zenith Porthole sets.

I've seen several of them and I understand the overall condition will affect price, but I'd like to get a general idea of what these sets typically go for on the open market. I've attached a couple of examples that I'm currently considering. Althouth I'd rather have just the TV console, the fact that both of these Zenith units are combo's with an AM/FM radio and a phonograph is also OK with me. I guess the single most important factor to consider is the condition of the crt. I believe both of these sets use a 16" tube, and both are confirmed functional. How functional would be determined by me before the sale was completed. One set is missing the speaker, but since they are PM type speakers in these sets, I don't think that's a big issue. Obviously the owners want to get as much as possible for these sets, but sometimes they are pretty unrealistic about what the value should be. What are your opinions?

Not to throw a monkey wrentch into this thread, but I also saw a Raytheon port hole console for sale (see picture). The condition of the cabinet is not quite as good and it's overall in much rougher shape than the Zeniths, but I'd imagine the Raytheon is a more rare unit and therefore maybe more desireable?

So what do you all think?

Thanks for your input and advice.
Bob.