A higher quality rebuilt American grand piano can sound just as good and even better in some cases than a comparably priced new piano. Steinway, Mason and Hamlin, and Knabe are the rebuilt pianos of choice, while Baldwin and Chickering made models that are also quite rebuildable. Other older American makers such as Weber, Hardman, George Steck, and a host of others have made real solid, rebuildable pianos. If rebuilt properly, these American grand pianos can have a deep, rich tone and a responsive touch. Nice veneers and case styles make these better name rebuilt American grand pianos a better investment in some cases than a new piano.
Not every American grand piano is worth rebuilding. Other than sentimental value and very unusual case designs, the criteria for determining whether a piano is worth rebuilding is if it has aggraffes and posts.
Usually agraffes and posts are an indication of a better made, higher quality piano.