Symmachi–Nicomachi diptych Symmachi–Nicomachi diptych The Symmachi–Nicomachi diptych is a book-size, Late Antique ivory diptych dating to the late fourth or early fifth century, whose panels depict scenes of ritual pagan religious practices. Both its style and its content reflect a short-lived revival of traditional Roman religion and Classicism at a time when the Roman world was turning towards Christianity and rejecting the Classical tradition. The diptych takes its name from the inscriptions "Nicomachorum" and "Symmachorum", in reference to two prominent Roman Senate families. The diptych remained intact until the nineteenth century. The earliest description of the leaves dates to 1717, when an
St John Altarpiece (Memling) it presents a narrative, meant to emulate a vision the donors or viewers would experience when viewing the inside panels. Unlike most altarpieces of these types, Memling's fails to present a single unifying iconographical focus and is quite generalized with themes that seem unsuited for its specific location, according to Blum. She speculates the donors may have chosen the specific iconography, which "celebrated intercessory saints on the interior". It is an unusual painting in that it seems to "have served a double function: that of personal propitiation and that of public altarpiece, which portrayed the role of the religious community