I've played a lot of 1920's uprights in my Sunday School days. Not top of the line pianos like a Mason and Hamlin, but home use pianos don't deteriorate that much. It is not the years, it is the hours use that wears out a piano. Most home piano owners don't practice that often. I don't really see the repairs the previous poster warning about being commonly needed. The most common thing in 1920's pianos besides the rotted straps (which grands don't have) is the ivory keytops coming off. I recently played an heirloom upright in the living room of a local minister. It felt and sounded fine to me. After recent tuning the local service that advertises on the radio, had mentioned they could put the piano in fine shape for $2000. Fearmongering is what I call that practice. To inspect a piano yourself read post 2 of this thread: https://www.pianostreet.com/smf/index.phpIf the various strings match in tone and the keys don't stick I don't see voicing and regulation being that essential to a 1915 piano. The main barrier, the scale (wire lengths) is designed for A=420 or so, not 440. Playing at home, only your record player will know your tuning is low. I wouldn't recommend pulling it up, the overtones could be off.