portuguese macau patacas 20 avos value mop fiat money precious metals currency exchange china macao dragonboat coin

animal art arts asia asian avo avos barter boat border brass carving cash celebration change china chinese circulating coin crafts craftsmanship culture currency dance deco decoration design dragon dragonboat east exchange festival festive fiat gold golden heritage lion lions macao macau mass metals mint mintage money mop orient oriental patacas pattern payment performance portuguese precious production public royal ship spare trade value wild