前: Crowned quatred escutcheon and the pillars of Hercules with old latin motto PLVS ULTRA (further beyond), in front of eagle n with motto in ribbon UNA GRANDE LIBRE (a big free); Face value at top 50 / PTAS (比塞塔（西班牙的基本货币单位）), at left, 6-pointed star ✶ with incuse year 58 until 75 或者 BA (Barcelona), BA was minted to commemorate the Ibero-American Numismatic Exposition in Barcelona in 1958. 背面: Head of the Caudillo Francisco Franco facing right. Ruler ↻ around FRANCISCO FRANCO CAUDILLO DE ESPAÑA POR LA G. DE DIOS (leader of Spain by the grace of god), year design ⤻ at bottom • 1957 • 边缘: Motto ★ UNA ★ | ★ GRANDE ★ | ★ LIBRE ★ |
