However much sentimental value it has, and however nice the furniture in front looks, it is an old upright.
Old uprights are worth almost nothing due to the high cost of moving them. The Louisville moving service using a free advertising service will not touch them. They weigh over 400 lb typically. In the southern UK, there is a charge for the government to carry them away and dispose of them.
While I will tune old uprights for friends, and occasionally enjoy playing them, I much prefer moving 300 lb console pianos.
$2000 seems too much to spend on one of these, much less $20000. 1880 is not a particularly historically significant year for piano production. Chickering is a good brand name, but I wouldn't spend $200 on it personally. Definitely a bad sound board is not worth replacing for an instrument to be played. This model is not that special.
I've played a 1905 no-name upright recently, that sounded fine. The owner told me the local Y***** dealer under their "vintage" name offered to "restore" it for $2000. Other then tuning, I couldn't hear anything wrong with it. The one string two string three string tones matched nicely. So voicing wasn't the problem. I can't fathom what service what the pro was planning to do. finish stripping and reapplication perhaps? Some uprights get clevises in the action that come unglued, but many uprights go stoutly to the dump with everything still working properly.
I hope for your needs you find the right recipient in New Mexico with the basic skills to learn to repair this. But a piano that needs a soundboard is definitely not a project for a novice without a lot of woodshop equipment. I'd like an old upright to play ragtime on, because of the unique sound, but not this one.
Sorry about the bad news.