Steelyard Weight with a Bust of a Byzantine Empress and a Hook. This Byzantine steelyard weight dates from the first half of the 5th century. The bronze hook would permit it to be suspended from and moved along a ruled steelyard to determine the weight of an item hung from the opposite end. The Metropolitan Museum of Art (New York) is one of the world’s largest and finest art museums. Its collection includes more than two million works of art spanning five thousand years of world culture, from prehistory to the present and from every part of the globe. Public Hours: 10:30 a.m.–5:30 p.m. Open seven days a week.