Issued by Spain in 1966, this commemorative stamp marks Semana Naval Barcelona, a maritime celebration highlighting Spain’s long naval heritage and seafaring traditions. The design features a crowned naval anchor symbolizing royal naval authority and maritime strength. Printed in a clean monochrome style, the issue reflects mid-20th century Spanish commemorative aesthetics. Barcelona’s role as a historic Mediterranean port adds strong thematic appeal for naval and maritime collectors. A desirable item for collections focused on naval history, transport, or Spanish commemoratives of the 1960s.