Pyx four leaves MNMA Cl. Pyx with fourleaves clover decoration Champlev copper enameled and gilt Limoges first half of the th century Pyxide dcor de quatrefeuilles Cuivre champlev maill et dor Limoges premire moiti du XIIIe sicle Museum Muse national du Moyen ge Room object history credit line Wasset bequest accession number Cl