The carving of mother-of-pearl roundels with religious subjects flourished in the region of the Upper Rhine in the second half of the 15th century. Similar examples include roundels showing the Nativity of Christ and the Virgin and child in the garden in the Kofler-Truninger collection (S140 and S145). The present example is of particularly fine quality; note the complex folds of drapery in the Virgin's dress.
RELATED LITERATURE
H. Schnitzler, F. Volbach and P. Bloch, Skulpturen. Elfenbein, Perlmutter, Stein, Holz. Europäisches Mittelalter. Sammlung E. und M. Kofler-Truninger, Luzern, vol. 1, Luzern & Stuttgart 1964, p. 37 and figs. S140 & S145