I have a relative who owns the Kimball baby grand piano in my house, and as she has been on weeks of maternity leave without pay, she needs the money selling it may bring (she lives about 100 miles away). Unfortunately, none of us involved know that much about pianos or how to estimate the value of this one. I know there is supposed to be a serial number somewhere on it, but I cannot find it. Knowing when it was manufactured, which could be learned from that number, should be a start on appraisal. While the finish is still at least fair (I think), I know it is way out of tune and there are a couple of keys that are stuck and one or 2 that stick down temporarily. The pedals are loose. As you might guess, I am no pianist (at best, I might play an old familiar hymn competently after a few day's practice), no one has played that thing as it should be played for many years, and virtually not at all for quite a few years. While I would like to buy it from the owner to get her some needed cash, I would hate to be short or over on this. If it helps, the piano was bought for $475 in 1968 for my sister and me to learn to play, so I'm certain it should be 50 to 70 years old, definitely 45+. And I have found out the price for tuning is $125 to $155, and more if not done for years. I'm thinking of offering her $600 plus the promise of 1/3 net profit if there is any. Anyone know, or can tell much about this from my description?