1. Look at the color.
The fineness of true silver dollar is generally about 90% silver, and the silver dollar with this content is white and soft. 127; After rust removal, there is a strong luster. The silver dollar with low color or fake silver dollar is dim, the red copper silver dollar is reddish, the brass silver dollar is yellowish, the white copper silver dollar is cyan, the lead silver dollar is gray-black, and the zinc silver dollar is cyan.
2. Listen to this poem
The sound made by the real silver dollar after striking is pure, soft and calm. The fake silver dollar with high copper content makes a sharp sound after being struck, the fake silver dollar with full copper and silver plating makes a sharp and short sound, the fake silver dollar with high zinc content makes a crisp and loud sound, the fake silver dollar with copper or lead is dull, and the dug silver dollar makes a dumb sound or becomes a "dumb version". However, some real silver dollars have been burnt out, cracked or damp for a long time, resulting in abnormal sound. Therefore, you must be careful when listening to the sound.
3. Specific gravity test
The specific gravity of silver is 10.5, which is lower than gold and platinum, but higher than other common metals such as copper, lead and zinc. Guangxu Yuanbao Kuping a silver coin of 70 cents, Yuan Shikai's head in the Republic of China, Sun Yat-sen's founding commemorative coin, etc. Generally, the weight is between 25.5 grams and 27 grams, and the weight of one or two silver coins is about 36 grams. The real silver dollar error will not exceed 0.4 grams. Fake silver coins are doped with a lot of other metals, such as copper, lead and zinc. 127; Knowing the proportion of different metals, just compare the fake silver dollar with the real silver dollar with the same volume and weigh it gently with your finger, and you will find that the fake silver dollar is light and the real silver dollar is heavy. According to the balance, the fake silver dollar is 2 to 5 grams lighter than the real silver dollar.