Portrait painting by Robert Campin (the Master of Flemalle), LeadArt oil painting just do reproduction of them in museum quality on linen:

Robert Campin (c. 1375 – 26 April 1444), now usually identified as the artist known as the Master of Flemalle, is usually considered the first great master of Early Netherlandish painting. This had been a matter of controversy for decades; Campin's life is relatively well documented for the period, but no works in assessable condition could be securely connected with him, whilst a corpus of work had been attached to the unidentified "Master of Flémalle", named after the supposed origin of a work.