Keywords: Ebony altar of Constance of Poland.jpg Artwork Creator Matthias Walbaum s 1610 silver ebony cm 78 63 Institution Diocesan Museum in Płock Treasury accession number object history s 1610 commission Constance Habsburg Warsaw gift Płock Cathedral Constance Habsburg credit line The central plaque depicts two scenes - the Washing of the Feet upper part and the Last Supper lower part http //www sklep antykwariat biz/pic1/6481 Kłosy 1881 5 26 no 830 p 336 See below Engraving Engraving http //www sklep antykwariat biz/pic1/6481 Kłosy 1881 5 26 no 830 p 336 author < 1881 PD-old-100 DEFAULTSORT 1610s; Altar of Constance of Austria Altar of Constance of Austria |