对于同类器物器形的鉴定，即使同一类型的铜器，由于出现时间不同，形体也有很大变化，这也是断定器物年代和真伪的重要依据，铜器作伪方法有以下几种:
For the identification of the shape of similar utensils, even the same type of copper utensils have great changes in shape due to different occurrence times, which is also an important basis for judging the age and authenticity of utensils. There are the following methods for counterfeiting copper utensils:
①全器均系伪器②器真铭文伪③器真纹饰伪④器真铭文、纹饰皆伪⑤铭文真器伪⑥器身有真有伪⑦一件器物由两件或 3件真器部分残片拼凑而成⑧器身真，但附件(盖、提梁等)伪等。这些需要我们从器物类别特征、年代、时代风格等不同方面进行综合分析。框格护坡模具 箱体护坡模具 华尔街铜牛 电阻柜 接地电阻柜 电缆保护接地箱 隔离墩模具 化粪池模具
① All the utensils are fake utensils ② the real inscriptions of utensils are fake ③ the real patterns of utensils are fake ④ the real inscriptions and patterns of utensils are fake ⑤ the inscriptions of real utensils are fake ⑥ the body of utensils is real and fake ⑦ one utensil is made up of two or three pieces of fragments of real utensils ⑧ the body of utensils is real, but the accessories (cover, lifting beam, etc.) are fake, etc. These require us to make a comprehensive analysis from different aspects, such as the category characteristics, age, style of the times and so on.