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action frame (after the keyslip is removed), or stamped on Serial number is often hidden and stamped on the other side, facing the keys).
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keyslip (long wooden ledge, runs along the front/bottom of the keys.
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action frame (after the keyslip is removed), or stamped on Serial number is often hidden and stamped on the other side, facing the keys).
keyslip (long wooden ledge, runs along the front/bottom of the keys.