Generation of gold and silver copper foetus measures the ducks.Specification: high 20 cm long and 23.5 cm wide, 10.6 cm weighs 1130 grams.Is one of the ancient metal details decoration techniques of gold or silver, also known as the "wrong".A precious metal processing technology is the spring and autumn period is on the rise. and silver in the wrong process, use first pottery mould engraving inside the van, to coin a table with a picture of the groove bronze ware, and then cut the gold and silver or copper into embedded into the surface of the copper strip or sheet, with a small hammer hammer die flat, with stone flat wrong, then with fine sand polish finally.In 2014 state-level non-material cultural heritage.Due to the different colors bronze Yu Jinyin and copper, so after processing and molding of gold and silver bronze ware, changed the original bronze color single status, be gorgeous, more show nobility.For fault only copper bronze ware, academic circles is generally not known as the gold and silver in the wrong, which is called copper by mistake.