What do you think of the silver ingots in Daqingku?
1, honeycomb method
Due to the defects of casting process, many honeycomb pores will be formed at the bottom of silver ingot during casting, which is generally called honeycomb. The size and depth of these honeycombs is an important basis for distinguishing genuine and fake silver ingots. If the honeycomb of the silver ingot is deep and dense, the holes are round and bright, and there is color luster, it means that it is a real silver ingot; If the silver ingot is doped with other metals, there is no such sign, while the ordinary lead ingot is honeycomb-shaped gray-black.
real
wrong
2, look at the color and patina.
The color of silver is white and stable. After years of use or storage, a layer of patina will be formed on the surface of the old silver ingot. The color of patina is mostly gray or grayish brown, and the color is warm and moist. There are sayings in Tibetan circles that "seven blacks, eight grays and nine turns green, and the color is paid off 90% of the time" and "seven blacks and eight Hong Jiu whites, and the color is restored 950% of the time", which refer to silver containing brass and silver containing copper respectively.
Generally speaking, it takes a short time to forge silver ingots, and it is impossible to produce natural patina like old silver ingots. The color looks like it's just baked. It's very lively. The patina on the surface of the silver ingot is black or other colored flower patina.
3. Look at the inscription on it
Inscription of silver ingot refers to the words carved or cast on silver ingot when casting silver ingot. The content varies from generation to generation, including casting time, place, use, craftsman's name, etc.
The inscription was carved to ensure the quality of the silver ingots, and the inscription was signed and sworn to show that it was responsible for the silver ingots handled. This is also an important basis for later identification of true and false silver ingots. At present, most of the inscriptions seen on the market are engraved. Inscriptions in seal cutting can be divided into yin engraving and yang engraving. Time is roughly divided by the Yongzheng period of the Qing Dynasty. The front is mostly in yin, and the back is mostly in yang. If it doesn't match, it may be fake.
Step 4 weigh and listen to the sound
Before the Qing Dynasty, there was no uniform regulation on the casting weight of silver ingots, but in the Qing Dynasty, there was a basic uniform regulation on the weight of silver ingots, usually five-taels, twelve-taels and fifty-two kinds of silver ingots, with broken silver below five taels, which was mainly limited to market circulation and spare parts.
At present, the silver ingots of Qing Dynasty appearing on the market are basically fake ingots. Listen to the sound of silver ingots, mainly fake ones. For the silver ingot in question, take another silver ingot and hit it. If there is a hollow sound or broken sound, it should be a wrapped silver ingot.