Thank you very much, yes I forgot to say that I've already contacted Epiphone and sent them the pictures as they asked me, let's wait the answer 😄
The guitar is ok, I don't think it's fake one, I'm afraid that could be something like a B stock maybe...there are some slight cosmetic defects on the painting, and on this second guitar a couple of "dead frets", also the strings are a little bit rusted (the guitar is from 2014)...I don't know if I can fix the problem by changing the strings or It'll be better to try a third model LOL