De pig. & hypo. Tractatus perutilis de pignoribus et hypotecis
A 1535 Latin legal treatise on pledges and mortgages by Antonio Negusanti, printed in Lyon for scholars and lawyers. Its woodcut pictures are a heraldic shield with a fleur-de-lis and crossed keys, a winged putto holding that shield, and a plain decorated initial S with flowers. A designer could take the compact, repeated shield-and-putto motif as a model for printers' marks, bookplates, or emblem-style badges.
