This impressive Virgin of the Crescent Moon can be ascribed with little doubt to the Upper Austrian sculptor Lienhart Astl, who ran a workshop in Gmunden between circa 1505-1523. The composition finds a direct comparison in the central group of his signed Lady Altar in Hallstatt, one of the most significant and elaborate altarpieces in Upper Austria (see Foto Marburg, inv. no. fm1782591). Note also the Virgin's delicate features and high forehead, the droll portliness of the Child, and the heavy concentric drapes, which are closely analogous to the Hallstadt figures.
A. Legner, Spätgotik in Salzburg: Skulptur und Kunstgewerbe 1400-1530, exh. cat. Neues Haus, Salzburg, 1976, p. 143, no. 265 and pl. 207