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The Young Chang Pramberger series pianos are held in high esteem, particularly because of the involvement of Joe Pramberger, who is nos deceased.
It sounds as if your piano is well-maintained. If it is in excellent condition, its current retail (replacement or insurance) value is approximately $12,000. 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 $4,800, depending on location and actual condition.
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