How to identify the authenticity of copper coins: 10 days of hot topics and practical guide
In recent years, the popularity of collecting ancient coins has continued to rise, especially the authenticity identification of copper coins has become a hot topic in the collecting circle. This article will combine the hot content on the Internet in the past 10 days to provide you with a structured copper coin identification guide to help you quickly master key techniques.
1. Recently popular topics related to copper coin identification
| Hot search keywords | Search volume trends | Main discussion platform |
|---|---|---|
| Copper coin rust color identification | up 38% | Zhihu, Bilibili |
| Authenticity of Qing Dynasty copper coins | up 25% | Baidu Tieba, Douyin |
| Copper coin sound test method | up 45% | Xiaohongshu, Kuaishou |
| copper coin weight standard | up 32% | WeChat public account |
2. Five core methods for identifying the authenticity of copper coins
1. Observe the rust color characteristics
The rust color of genuine copper coins is naturally layered, usually showing a gradual transition. The rust color of imitation products is often single and floating on the surface, and there may even be traces of chemical dyeing.
| Rust color type | Characteristics of authenticity | Characteristics of imitations |
|---|---|---|
| patina | Clear layers, with a sense of mineralization | Uniform color, no gradation |
| red rust | Natural oxidation, patina | Bright colors, no patina |
| black rust | Dense, hard, shiny | Loose and easy to fall off, dull |
2. Check text and graphics
Genuine copper coins have clear and powerful writing strokes and fine details in patterns. Imitation products often have problems such as blurred strokes and deformed patterns.
3. Weighing comparison
| Copper coin type | Standard weight(g) | Allowable error |
|---|---|---|
| Kangxi Tongbao | 4.0-4.5 | ±0.3 |
| Qianlong Tongbao | 3.8-4.2 | ±0.3 |
| Guangxu Yuanbao | 7.0-7.3 | ±0.5 |
4. Distinguish fakes by listening to sounds
The sound of genuine copper coins falling to the ground is clear and sweet and lasts a long time. The imitation sound is dull and short.
5. Professional instrument testing
For high-value copper coins, it is recommended to use professional equipment to detect metal composition and age.
3. Warning on recent popular counterfeiting techniques
According to the latest discussion on the collection forum, the following new counterfeiting techniques have appeared recently and need to be vigilant:
1. Laser engraving imitation technology
2. Electrolysis aging process
3. Authenticity and fake stitching methods
4. High-tech coating technology
4. Collection suggestions
1. Beginners are advised to start collecting copper coins with ordinary appearance.
2. Be sure to check authoritative catalogs before purchasing.
3. Transaction through formal channels
4. It is recommended to issue a professional appraisal certificate for important collections
5. Reference for the collection value of popular copper coins
| Copper coin name | Condition | Market reference price (yuan) |
|---|---|---|
| Xianfeng Chongbao | Beautiful products | 800-1500 |
| Yongzheng Tongbao | Extremely beautiful product | 2000-5000 |
| Shunzhi Tongbao | Common products | 300-800 |
Through the systematic application of the above methods, you will be able to greatly improve the accuracy of copper coin authenticity identification. Collection is a subject that requires continuous learning and practice. It is recommended to seek advice from senior collectors and accumulate practical experience.
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