This portrait of the Elector of Saxony (1468 - 1532) is joined as a diptych with the portrait of his son, 'Johann Friedrich the Magnanimous', who succeeded him as elector in 1532. Both portraits are in the original frames.
The pairing of portraits of father and son is unusual, and may have arisen because the six-year-old Johann Friedrich's mother, Sophia of Mecklenburg, died giving birth to him.
On the back is the family coat of arms. The frame is probably original.