thank you lostintheidlewonder!I got the serial number. it was inside the case, on the left, near the hinges of the top cover.it reads 58060 - dates this to 1910.Also found '126' engraved on bare wood under the strings of middle region. I guess this is the model number. What do you think?I might be selling the piano or learning to play on it, just haven't decided yet. What do you think of its market value?