Espanca script

The Espanca script (from Castro Verde, Baixo Alentejo, Portugal) is the only complete signary (alphabetical sequence) known of the Paleohispanic scripts. It is inscribed on a piece of slate, 48×28×2 cm. This alphabet consists of 27 letters written double. The 27 letters in the outer line are written in a better hand than those of the inner line, from which it has been inferred that the slate was a teaching exercise in which a master wrote the alphabet and a student copied it.
The Espanca signary is no longer the only known paleohispanic script; in recent years, four more northeastern Iberian signaries have been published: the Castellet de Bernabé signary, the Tos Pelat signary, the Ger signary and the Bolvir signary. Each of them has a particular sequence of signs and none of them match the sequence of signs of the Espanca signary.
Recently, it has been identified as a southern paleohispanic abecedary an inscription made on one side of an ostrakon from the site of Villasviejas del Tamuja (Botija, Caceres), because it fits with the seven signs of the central sequence of the Espanca abecedary.
More information, including a bibliography, on the Wikipedia page . There is various other coverage, eg this.
Category:Undeciphered writing systems
Category:Ancient World