Issued by France in 1967, this Europa CEPT set features a striking design of interlocking gears, symbolizing European cooperation and unity. The 0.30 franc (blue) and 0.60 franc (brown) values were engraved by Robert Cami after designs by Bonnevalle. The central gear carries the CEPT emblem, representing the Conference of European Postal and Telecommunications Administrations. These stamps are part of the annual Europa series, which highlighted European solidarity and integration. Collectors value this issue for its classic engraved design, thematic appeal, and its role in the ongoing Europa program.