Troy weight them Holland troy, Paris troy, etc. Their values varied from one another by up to several percentage points. Troy weights were first used in England in the 15th century, and were made official for gold and silver in 1527. The British Imperial system of weights and measures (also known as Imperial units) was established in 1824, prior to which the troy weight system was a subset of pre-Imperial English units. The troy ounce in use today is essentially the same as the British Imperial troy ounce (1824–1971), adopted as an official weight standard for United States coinage by Act of
Precious (Boukenger) Bishamon Coast that can only be accessible once every 20 years when the tide is low enough. The Questers obtained it without trouble for their master plan: The creation of the Homunculus. After the Questers were killed, the Mercurius Vessel was placed in S.G.S. custody. The is the Precious on which the caduceus symbol is based on. The Questers used Gajya to obtain the staff from Kurosagi Forest. It can shoot powerful lighting. When put into the Mercurius Vessel, the staff took the shape of the Homunculus' skeleton. The is a Precious found inside a volcano's crater on Genbu Mountain,