Thanks for your question. Welcome to JustAnswer, it will be my pleasure to help you. My name is***** can work on this for you now with a little more information.
The serial number gives a year of build of 1954. Has your piano been regularly tuned and maintained?
Do you know what work was done before you purchased? Had all or any of the internal mechanics been replaced or restored? Also if you have any pictures, particularly of the internal mechanics which you could attach on here using the paperclip or the +Add button on the menu bar in the reply section, that would be very helpful.
Thanks for the info and pictures. I will complete the research and come back to you in about 30 minutes.
Thank you for your patience.
From the Yamaha serial number listings your piano was built in 1954 so it is over 60 years old. However, the total rebuild/restoration in 1993 will have reset the clock quite considerably. That said, there will be some depreciation from then due to age and usage to consider.
Yamaha have a particularly good reputation for making a very good range of quality pianos and thus their second-hand prices hold up quite well.
From that which I can see in the pictures you attached, the condition is very good and assuming that it has been regularly tuned and maintained, with the information I have, together with the information you have provided, I believe that your Yamaha Baby Grand Piano now has a value in the $6,500 to $8,500 range for a private sale.
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