After the Rif War and their wartime experiences with armored vehicles, the Spanish army decided to finance the design of a new light tank of its own production, in a design derived from the Renault FT-17.
The new model was equipped with greater firepower than the Renault, thanks to a special type of turret, designed in two articulated halves that could operate independently, each armed with a machine gun.
The new tank was commissioned to the Trubia factory in Asturias in 1926, but production was so slow that when the civil war broke out, there were only three operational models that remained in nationalist hands, with a fourth model in the factory that the workers put at the service of the Republic. This latter was destroyed during the siege of Oviedo, with the rest being scrapped at the end of the conflict.