The blurb about the shape of the piano in the link is incorrect. The traditional grand piano shape that we think of was originally based on the harpsichord shape, and that was around for quite a long time before the piano.
However, the rectangular pianos like the one that's linked were used in homes in the era before upright pianos became popular (making them upright took less space). That one's pretty interesting!
It has what was then the latest innovation: a full cast metal frame for the strings that is suspended above the soundboard, which allowed strings to be heavier and the piano to be louder.
I had a friend whose parents had an antique piano like that, and it was a nice instrument, sweet sounding. Think parlor guitar for an analogy. The case on that one certainly looks like BRW, and it would make sense if it was, since shipping from Brazil to Connecticut was probably a lot less expensive than shipping from India or Africa. Obviously, the wood wasn't in short supply then, people even used BRW for flooring.
For strength, the way pianos have been made for a long time is to glue layers of wood together, kind of like plywood, and shape it with steam over a form. So there may not be very thick slabs of rosewood on that one. Or there may be if they made piano cases differently then.
It'd be a shame to destroy an historical instrument like that.