I see you are new to Airforums and to the Airstream community.
Let's turn it around for a second. Say you wanted to put your trailer back original and someone here on Airforums was willing to give you a couch "Free" "How would that make you feel?" Pretty good I bet, and you would think a lot of that person and this website.
How about just giving the thing to anyone that can use it and they pay the shipping?
It's clear, you're not going to be using it. The question becomes, why do you need anything for it? My feeling, when it comes to this kinda stuff, just give it to someone that's going to use it. A $100.00 bucks in CA is only going to get you four cups of coffee anyway, so what difference does it make.
Plus, all the information you'll be getting "FREE" here on Airforums, you will be paid back 10X over even if you did sell it for $100.00
And you will make a new best friend that also has a 1961
Airstream that you might need something from someday.
Just a Thought,