Carlos VII's laureate head right. Minted in Oñate, OT perhaps are initials of Oñate atelier in Spanish. Circulated in Basque Country and Navarre.
Lettering: CARLOS VII P. L. GRACIA DE DIOS REY DE LAS ESPAÑAS
Crowned arms above sprigs, flanked by crowned monograms, within beaded circle.
5 CENTIMOS DE PESETA