This type of coin circulated from 1958 to 1975. It was originally issued and authorized in 1957. For each year the identifier was engraved inside a star symbol in the coin.

Obverse
Portrait of Francisco Franco facing right

Script: Latin

Lettering:
FRANCISCO FRANCO CAUDILLO DE ESPAÑA POR LA G.DE DIOS
1957

Translation:
Francisco Franco leader of Spain by the grace of God
1957

Engraver: Manuel Marín Jimeno

Designer: Mariano Benlliure Gil Read more on Wikipedia

Reverse
Spanish coat of arms with the Francoist eagle and the value in the top right corner

Script: Latin

Lettering:
25 PTAS
UNA GRANDE LIBRE
PLUS ULTRA

Translation:
25 Pesetas
One great free
Further beyond

Engraver: Teodoro Miciano Becerra

Edge
Embossed lettering

Script: Latin

Lettering: UNA GRANDE LIBRE

Translation: ONE * * GREAT * * FREE * *