Issued by Greece in 1967, this Europa CEPT set symbolizes European unity through the imagery of interlocking gears — a motif representing cooperation and progress among member nations. The two denominations, 2.50 drachma in brown and 4.50 drachma in green, feature the iconic CEPT emblem at the center. Designed as part of the annual Europa series, these stamps reflect the spirit of integration and shared development within post-war Europe. A classic addition for collectors of Europa or Greek philately.