To the right and left of the keys are two end cheek blocks are each secured down with a giant bolt or screw, which passes through the piano's keybed, both of which must be removed, to access the interior of the piano (see video, above).
Caution: When unscrewing and removing the cheek blocks, To recap: the piano's serial number may be hidden on the back of the piano's keyslip (immediately in front of / below the keys), on the action's front keyframe, on the cheek blocks (each side), or within the action itself, once removed from the piano.
3) Stamped on the back of the piano; near the top of the wood frame.
Scroll down below to find the (1) manufacturer of your piano, and then (2) click on the link to find the serial number.
(Please be patient as we are updating this page on a daily basis.
On older pianos, you may find 3-5 screws, underneath the keyslip, that will need to be removed (or, simply lift up, if no screws are present) to view the action frame.
The serial number may be stamped on the front of the frame's wooden base, immediately under the keys.
Search for piano dating:
After lifting up the lid, look along the top front area of the plate.