I' ve carried out some investigation and my last guess is Chartreux because the eyes are golden, not green like a Russian Blue, but he isn't Extra fat confronted just like a Beitish blue and much too major to get a Korat. But Indeed, your cat would be the doppelganger https://augusta-precious-metals-t32109.madmouseblog.com/16084374/a-review-of-siamese