The reverse of the panels of the polyptych depict the donors. Nicolas Rolin is an old man, whose nose is too long and whose hair has been cut short. Guigonne de Salins lowers her eyes and gestures with her joined hands towards her book of hours; on her head she wears a starched net veil. Behind each of them, an angel is carrying a shield emblazoned with their respective coats-of-arms. Rolin is facing towards an elegant imitation statue of St Sebastian executed in grey tint, as if carved from marble. His wife is looking towards another imitation statue, this time of St Anthony, who is accompanied by a young pig. (Ibid).
These paintings are absolutely amazing.