The Master of the Osservanza Triptych, also known as the Osservanza Master and as the Master of Osservanza, is the name given to an Italian painter of the Sienese school active about 1430 to 1450.
2e quart du XVe siècle (1425 - 1450) · ルーヴル美術館
1e moitié du XVe siècle (vers 1430 - 1440) · ルーヴル美術館
c. 1440 · 非展示 · ナショナル・ギャラリー
