Very good post, Geileis! The Tartessos question or "mystery" is always fascinating to discuss here. I remember to read one of the most important classic authors : Avienus and it's "Ora Maritima". It's work it's a geographical description of the sea coast from Britannia until Euxin, in the Black Sea, around 530 a. C. (following some historians). He gaves us interesting informations about Tartessos kingdom but also full controversy.

Ora Maritima of Avienus (in latin)