The Wawel holdings of goldsmith’s work include gold and silver objects as well as gems and jewelry. It is one of the most prized collections of its kind in Poland. Precious objects, including works of art from the Radziwiłł treasury at Nieśwież (now Nesvizh), recovered from the Soviet Union after 1924 on the basis of the Treaty of Riga, formed the nub of the collection. Since then, the holdings have been systematically augmented through targeted purchases made on the international antiques market and today encompass a representative selection from late-antique pieces through medieval gold and silver, jewelry, and ivory carvings to fine Renaissance, Mannerist, and Baroque objects. Many of them had belonged to the kings of Poland (from Casimir the Great to Stanislaus August Poniatowski) or members of the Commonwealth’s leading magnate families (Radziwiłł, Potocki, Szydłowiecki, Sapieha, Lanckoroński). Some were found in archaeological excavations on Wawel Hill. The Crown Treasury displays the most important ensemble of Old Polish silver, which includes rare surviving examples of secular vessels, and the finest collection of Nuremberg and Augsburg gold and silver in Poland.