MS Gr. class. c. 6 1578

P.Herc. 'B' (Greek text), P.Herc. 255 ('247', Metrodorus, Adversus dialecticos?), P.Herc. 238 (Philodemus, De rhetorica), and P.Herc. 1082 ('237', Philodemus, De vitiis (De adulatione))
Drawing by G.B. Malesci