<Li> <P> The Queen's Lyre from Wooley's published record </P> </Li> <P> The Queen's Lyre from Wooley's published record </P> <Li> <P> Leonard Woolley holding the hardened plaster mold of the Sumerian Queen's Lyre, 1922 </P> </Li> <P> Leonard Woolley holding the hardened plaster mold of the Sumerian Queen's Lyre, 1922 </P>

Which of the following materials was not used in the great lyre with bull's head (fig. 2-7)