Consiliorum consumatissimi artium et medicine doctoris domini Joannis Matthei de Gradi Mediolanensis secundum viam Avicenne ordinatorum utile repertorium
A 1514 Venetian medical repertory compiled by the physician Giovanni Matteo Ferrari da Gradi of Milan, printed in Venice by Georgius Arrivabenus for physicians working in the Avicennan tradition. The single picture is a printer's device: a black rectangular panel with a white Latin cross above a circle divided into quadrants bearing the letters O, S, M, a bold graphic emblem with strong figure-ground contrast that a designer could use as a reversed monogram or mark.
