This unnamed painting, refered to as "Man in a turban, or chaperon", is believed to be a self portrait. 

Jan has been incorrectly credited with creating oil painting. While this is not true he did develop new and remarkable effects with it.

Jan van Eyck produced paintings for private clients in addition to his work at the court. Foremost among these is the Ghent Altarpiece painted for Jodocus Vijdts and his wife Catherine Borluut. Started sometime before 1426 and completed, at least partially, by 1432, this polyptych has been seen to represent "the final conquest of reality in the North", differing from the great works of the Early Renaissance in Italy by virtue of its willingness to forgo classical idealization in favor of the faithful observation of nature.

The Annunciation

The picture depicts the Annunciation by the Archangel Gabriel to the Virgin Mary that she will bear the son of God (Luke 1:26-38). The inscription shows his words: "AVE GRÃ. PLENA" or "Hail, full of grace...". She modestly draws back and responds, "ECCE ANCILLA DÑI." or "Behold the handmaiden of the Lord". Her words are painted upside down for God above to see. The Seven gifts of the Holy Spirit descend to her on seven rays of light from the upper window to the left, with the dove symbolising the Holy Spirit following the same path. "This is the moment God's plan for salvation is set in motion. Through Christ's human incarnation the old era of the Law is transformed into a new era of Grace".

The Arnolfini Portrait is a painting in oils on oak panel finished in 1434.

This painting is believed to be a portrait of Giovanni di Nicolao Arnolfini and his wife in a room, presumably in their home in the Flemish city of Bruges. It is considered one of the most original and complex paintings in Western art history. It is one of the oldest very famous panel paintings to have been executed in oils rather than in tempera.

The illusionism of the painting was remarkable for its time, in part for the rendering of detail, but particularly for the use of light to evoke space in an interior.