Summary The large reredos of the Bollnäs church (300 km north of Stockholm) displays in its magnificent central portion the Holy Kinship, with some twenty beautifully carved figures, whereas the paintings of the double wings give us the twelve apostles, and on their workday sides four saints. The tracery is almost identical with that on a reredos from Brussels in the Art Muse‐um of Estonia, Tallinn. The subtle carving of the figures, too, brings to mind Netherlandish workmanship. On the other hand, undeniable similarities with the work of Tilman Rie‐menschneider have been recognized, and therefore it has been suggested to be a work of a German carver active in the Netherlands about 1500, if not a little later. However, this matter of attribution cannot be solved without also a discussion of the paintings. These, too, seem to indicate the Netherlands. Besides traits reminiscent of Dirk Bouts and Memling, there is even more that links this art to that of Michel Sittow. Trained in Bruges and active as a court painter in Spain and in the Netherlands, Sittow is mainly known for his exquisite small portrait. Yet, during two periods he lead an important workshop in his hometown, Tal‐linn (Reval), in fact both as a painter and as a producer of sculptures. In 1517, he returned permanently to Tallinn, where he died at the turn of year 1525–6. The only large size works by Sittow hitherto identified are the two workday‐side panels of an altarpiece in Tallinn, showing the Virgin and Child, Jacobus Mayor, St. Adrian, and St. An‐thony. The Bollnäs wings share many traits and striking details with these, as well as with a “Christ bearing the Cross” in Moscow, equally attributed to Sittow. There is, consequently, good reason to see Sittow also as the author of the Bollnäs panels, and to suppose that the reredos in its entirety was produced in his Tallinn workshop. Incidentally, that Brussels reredos, which obviously served as a model for the tracery, was in Tallinn. As to the dating, costume details and beard point towards the second decade of the 16th century. The wheels in the crown of St. Catherine are most probably derived from a work of about 1510 by Gerard David. A reasonable date for the Bollnäs rere‐dos would be the years 1517–1519, when Sittow had finally settled in Tallinn.