Actually, the Bush and Gerts brand was manufactured by another company (Haddorff) until 1960. But, none of that matters. Any piano older than thirty years needs internal restoration.
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, and a piano that hasn’t been regularly tuned will not hold a tuning. So, old pianos are at a disadvantage in the market.
Pianos are valued heavily on age after other factors like style, maker and condition. Age will tell you what kind of wear the piano would have mechanically. Even if the outside looks good the internal mechanisms are likely only in fair condition.
If it is in good cosmetic condition, the current retail (replacement or insurance) value of is approximately $1,000. If you were to sell it, you could expect to get the fair market (private sale or auction) value of approximately 40% of the retail amount or $400, depending on location and actual condition.
To sell the piano, you should advertise locally - you don't want to have to ship it. You can advertise on craigslist.com (free), in your local newspaper or on the bulletin board of a local supermarket. You could also post a notice on the bulletin board at a music school or the music department of a local college. If none of that nets you a sale, you may want to consider donating the piano to a charitable organization.
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