Once you have both numbers, you can begin to decode them.
The only official way is to contact the Yonex distributor for your country. For example: how to check yonex racket serial number
They will confirm if the numbers match their distribution records. Once you have both numbers, you can begin to decode them
Do not go straight to a website. Fake rackets often have numbers that look real but feel wrong. Run your fingernail over the shaft code. Yonex can confirm whether the serial matches their