a system of weights used mainly for precious metals and gems, with a pound of 12 ounces or 5,760 grains

gold closed at $332.5 a troy ounce

pounds troy

(in Homeric legend) the city of King Priam, besieged for ten years by the Greeks during the Trojan War. It was regarded as having been a purely legendary city until Heinrich Schliemann identified the mound of Hissarlik on the north-east Aegean coast of Turkey as the site of Troy. The city was apparently sacked and destroyed by fire in the mid 13th century BC, a period coinciding with the Mycenaean civilization of Greece