每个钢琴都有serial no,去厂家的网上查一下生产年份吧。。如果indention浅的话,会不会是试????和调琴时留下的?
每个钢琴都有serial no,去厂家的网上查一下生产年份吧。。如果indention浅的话,会不会是试????和调琴时留下的?
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