Refined example of the variety of solutions that intertwining ornamentation assumes in the Carolingian age, the work is the projecting part of an ambo, called lettorino by virtue of its function as a place for reading sacred texts. The slab was obtained by reusing the base of a Roman monument of which an evident trace remains in the inscription that runs on the upper edge, dating back to the 2nd century AD. The external front, enclosed by a simple molding, is crossed by a ribbon that is knotted forming nine skeins, distributed in rows of three, connected diagonally. The work, purchased in 1890 by the Municipal Artistic Museum, comes from the assets of Giovanni Battista Lucini Passalacqua. A fragment with the same skein motif is kept in Moltrasio, in the chapel decorated by Alessandro Lucini Passalacqua in 1863 with various finds perhaps belonging to the pre-Romanesque phase of the basilica of Sant’Abbondio in Como.