Greetings from Colorado: Welcome to the Airstream community. Glad you decided to join. I find this an easy group and not stuffy about this protocol or that one. Relax and have fun.
As you know, there is a Airstream Classifieds portion associated with these Forums. Often there are interior parts for sale. There is not a big market for them, especially your model year. If it was a 50s trailer, then maybe more so. However, you could advertise it here for free, take a photo or two, and see if someone close by has an interest.
We have a 86 Limited 34', which is similar to your Sovereign
. We take a couple of long trips a year in our retirement. Our trailer has been in the family since it was new. Airstreams aren't the biggest trailer in the park, but they are unique, easy to tow, and quite comfortable.