Siamese cats have such an original appearance and such originality that they cannot be confused with one other breed. It’s probably that native Siamese from the East, from the territory of contemporary Thailand.
They are direct descendants of the wild Bengal cat. Throughout its history it has never been mated, at least consciously, with the representatives of Europe. This lightweight miniature cat fully retained the original features of the breed, except in the nodules of the broken tail.
About this tail there was even a legend. Like, Siamese Princess hung on them when bathing your family jewels, hence the creases with knots.