There are two main graphic as well as geographic variants in the family: •
Northeastern Iberian script • Dual variant (4th century BCE and 3rd century BCE) (tentative) • Non-dual variant (2nd century BCE and 1st century BCE) •
Southeastern Iberian script In the sense that the Iberian scripts are the scripts created for the Iberians to represent the Iberian language, the
Greco-Iberian alphabet, a separate adaptation of the
Greek alphabet, was also an Iberian script. It was used mainly in
Alicante and
Murcia. Likewise, neither the
southwestern script, very similar to southeastern Iberian script but used for the
Tartessian language, nor the
Celtiberian script, a direct adaptation of the
northeastern Iberian script used for the
Celtiberian language, are technically Iberian scripts. The northeastern Iberian script is often known simply as the
Iberian script, because it is the script of 95% of known Iberian inscriptions. These have been found mainly in the northeastern quadrant of the
Iberian Peninsula, mostly along the coast from
Languedoc-Roussillon to
Alicante, but with a deep penetration on the
Ebro valley. The southeastern Iberian script is poorly attested, and there are some gaps in the records: There are no positively identified symbols for /gu/, /do/, and /m/, for example. Unlike the
northeastern Iberian script the decipherment of the southeastern Iberian script is not still closed, because there are a significant group of signs without consensus value. The southeastern inscriptions have been found mainly in the southeastern quadrant of Iberia: Eastern
Andalusia,
Murcia,
Albacete,
Alicante, and
Valencia. There is substantial graphic variation in the Iberian glyphs, and over the past several decades many scholars have come to believe that, at least in northeastern Iberian script (and recently also in Celtiberian script) some of this variation is meaningful. It appears that the original simple letters were assigned specifically to the voiced consonants /b/, /d/, /g/, whereas the voiceless consonants /t/ and /k/ were derived from /d/ and /g/ syllables with the addition of a stroke. (This is the so-called
dual signary model: see the image at right). If correct, this innovation would parallel the creation of the Latin letter G from C by the addition of a stroke. ==Typology==