Summary: In 1896 the Ny Carlsberg Glyptotek acquired a marble dedication to Silvanus(CIL VI.36827). Often described as a work of unknown provenance, perhaps from the Lower Rhine, it is, however, known to have been found near the Piazza San Giovanni in Laterano in Rome – a provenance which reveals that the dedication was set up by a vexillarius in the Imperial Horse Guard and that it belongs to the famous body of dedications to the gods of the Roman army found at the barracks of the Horse Guard from the mid 18th century onwards.