Recently, a 5' 8' grand piano, dated 1989, that was entirely built from Mason and Hamlin parts by another company, when Mason and Hamlin was in bankruptcy, was sold on Ebay for about $6,500. You can verify this doing an Ebay search. I emailed the seller who told me he had it since it was new, watched it being put together, and, after wrestling with a decision for six months, decided he wanted a new Yamaha c3 Grand instead, as he can get a discount from cost.
He said every tuner he has every used has said 'That is really a nice piano'. This piano looks like it has had some typical family wear, with dings here and there. I thought this was a pretty good deal. Check out Mason Hamlin in the complete item section and you may get a goot idea of price. Although it is not a good idea to buy a piano sight unseen, these pianos do get sold, often to someone close by. And you get a good idea of a pianos worth, if a similar one has been sold. Prices can really vary, depending on the need of the seller, the willingness of the buyer, shipping cost, and many other factors, such as wear and tear, refinishing (which doesn't matter to some people), tone and action (which might not matter if you only want furniture), and other things.
I have seen other real Mason Hamlin 'A's go from $8,000 to $14,000, but these are from all eras. I see some people try to get more like $24,000 for once redone from the early 1900s. I think this is ridiculous, as I know someone who bought a new one for this price last year, although perhaps he got a particular good price.
In light of all of that, $19,000 is WAY too much, in my opinion, even for a 7-footer, which I just noticed after posting all this. But do more research, go to
www.pianoworld and ask, and maybe you can negotiate yourself a fair price.