St Michael Church, Pavia, dated 1130 AD. 

Part of the incredible heritage in the church is a bas relief set above one to the two entrance to the Crypt. It is carved in the local sandstone, the same of facades and interiors. It represents two angels which support a central round frame, inside which it is carved a Lamb, representing Christian Faith (Agnus Dei). The whole scene is inserted into a frame whose section is a “S” with insertion of flower decorations.