Issued by San Marino in 1970, this stamp commemorates the 10th European Philatelic Exhibition (Mostra del Francobollo Europa) held in Naples. The design reproduces a maritime painting attributed to Pieter Brueghel the Elder, depicting a lively historic harbor scene filled with sailing vessels approaching a coastal city. With its classic art theme and exhibition connection, the stamp appeals to collectors of Europa philatelic issues, art-on-stamps, and maritime history subjects. The 230-lire denomination represents a period when San Marino released many finely engraved exhibition-related commemoratives.