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I think it is Yamaha USA that replied to me...telling me that two models used the serial number found on my U3, M216 made in 1980 and M405T manufactured in 1989, both are consoles however...they do not have record of a U3 with my serial...I bought the piano as second habd import from Japan...and it ...

already did ask yamaha...they even said that my serial number was not listed for a U3....

please tell me about the model changes of the yamaha U3 which i have bought recently as used. my U3 is apparently manufactured around 1961 by its serial number but i noticed that the name "yamaha" in gold letters are inlayed at the upper right hand part at the front, not in the usual place...

i have bought a used Yamaha U3. I noticed that the name Yamaha in gold letter is at the upper right hand at the front, not immediately above the keys as most other U3s. The serial number is 131971, glossy cherry red finish. Please tell me about my piano. Thanks.