Manufactured by Motor Unión de Zarautz based in Zarautz, Guipuzkoa, in the years 1962 to 1964.
The firm was established by Talleres Basor, Antonio Azkuie, Sanches Gordomino and Estampaciones Arregui.
They built light motorcycles powered by a Derlan single-cylinder 125cc two-stroke engine housed in an Arregui frame constructed of stamped steel sheet, as were the front forks. The frames were originally built for Lube, who retracted their order.
Despite its attractive appearance the motorcycle had little success due apparently to the poor quality of the engine. Production ceased in 1964.
Sources: OTTW, fb.com/derlanboar
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