Simone Martini
The Crucifixion

1333
Tempera on wood, 9⅔ x 6.1 in. (24.5 x 15.5 cm.)
Koninklijk Museum voor Schone Kunsten, Antwerp

From the altarpiece known as the Passion Polyptych (or Orsini Polyptych).

More of the Crucifixion

Source: Web Gallery of Art