If you own a legitimate Eko guitar made in 2021, the serial number lookup is . You will get an answer, but you’ll need patience and probably an email to Italy. For buyers, always check that the serial format matches modern standards (e.g., starting with “21” or containing “21IT”). Don’t rely on decade-old forum threads.
For Eko guitars produced in recent years, including 2021, the serial number follows a more standardized format found on the back of the headstock Guitarsite Year Identification eko guitar serial number lookup 2021