The painting depicts the scene of the Coronation of the Virgin Mary by the Holy Trinity - a theme that appeared in the iconography of European and Polish art at the end of the 14th century. Unfortunately, archival sources do not reveal the author of the work.
Maria Działo, "Coronation of Mary (painting)", [in:] "The Sacred Lesser Poland Heritage", 2024, source: https://sdm.upjp2.edu.pl/en/works/coronation-of-mary-painting