The serial number indicates that your piano was built in 1977.
Old pianos have no value just for being old. In other words, prospective buyers are not collecting pianos; they want to be able to play them. Pianos have parts that wear out and must be replaced. So, old pianos are at a disadvantage in the market.
If your piano is in excellent un-restored condition, its current retail (replacement or insurance) value is approximately $2,000. Fully restored, the value would be $5,000.
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