This striking 3 Lire stamp from San Marino was issued in 1969 as part of a zodiac-themed series. It features the constellation Gemini, illustrated with twin silhouettes representing Castor and Pollux—the mythological twins of Greek and Roman lore. The stars of the constellation are boldly marked, with their names clearly labeled above. The background is rendered in dark violet with a glowing aura around the figures, enhancing the celestial theme. Designed by David Vangelli and printed by I.P.S. Roma, this stamp is a favorite among collectors of astrological or thematic issues.