I have a Jackson JS30KE Kelly, and I have it for like 3 years now, but today i started wondering in what year it was built, and stuff like that, so i went to the Jackson site and searched for something for serial numbers, i found it and pressed ctrl + f so i could find it easier, but my serial number is nowhere to be found in the list,

anyone has a clue how to find it out in another way?

the serial number is : 04050742
India. All those series numbers will tell you nowadays. The Jackson serial number list is only for USA's anyway; no way they could track their imports, nobody does. You can tell the country of origin by the number of digits in most cases, occasionally the year, but that is it.