Piano serial numbers identify the: Pianos year of manufacture, as well as. The circumstances surrounding the production of your piano, including factory history, manufacturing processes, and company ownership and oversight.

Do pianos appreciate in value?

Grand pianos generally appreciate more than verticals, and higher quality pianos increase more in value than less expensive ones. While Steinways tend to go up in price the most, many others also appreciate or at least hold their value.

How do you fix yellow keys on a piano?

You should first thoroughly dust the keys and then clean them with diluted vinegar. However make sure to use the teensiest bit, since strong acid with corrode dental bone. The ideal ratio is one part of vinegar in 4 parts of water. Also use only flannel or cheesecloth to scrub the keys.