Secondhand Yamaha Piano Questions

“How old is my Yamaha U1?”

How can I find the age of a used Yamaha U1 that we bought about 5 years ago, so our daughters could take lessons
( the lessons didn’t take, but they do play other instruments.)

The complete number is   U1  J 3102165

Is there a place we can look up the ‘pedigree’ or year of creation for our Yamaha upgright ?

Thanks awfully for your help.
– Chuck

Answer/ Hi Chuck
You can try here: besbrodepianos.co.uk/pianoserialnumber/yamaha.htm

Regards,
Graham Howard
UK Pianos