Abstract: An aethetically pleasing sign holder releasably engages a pole or post without requiring tools and protects a sign from the elements. A sign is slid into an opening formed in an edge of a thin, hollow sign housing, and a front wall of the housing is transparent so that the sign within the hollow housing is visible to observers. The sign housing is mounted to a swivally-mounted base and a pair of flexible and resilient, semi-circular parts are integrally formed with the base. The half parts are spread apart from one another to admit a pole between them, and converged toward one another to lock onto the pole. A catch is formed integrally with one of the half parts and a latch that releasably engages the catch is formed integrally with the other half part. The catch and latch include mating teeth that extend along a predetermined circumferential extent to enable attachment of the sign holder to poles of widely varying diameters.