How big is the new one-dollar coin?

The second set of 1 yuan coins: copper-nickel alloy (80) with a diameter of 30mm. The third set of 1 yuan coins: nickel-plated steel core (199 1) with a diameter of 25mm. The fourth set of 1 yuan coins: nickel-plated steel core (1999) with a diameter of 25mm.

How to identify the authenticity of 1 yuan coin?

Look at its color: 1 yuan coin is nickel white, while counterfeit money has obvious color difference according to different materials. The counterfeit money made of stainless steel is white and bright, while the counterfeit money made of iron alloy, aluminum alloy and lead-antimony alloy is gray. The counterfeit money made of nickel-plated alloy in the later period generally has poor adhesion, serious nickel layer peeling off and easy to rust after circulation, so it is easy to identify the authenticity from the appearance color.

Look at the piping of coins: some counterfeit chrysanthemum 1 yuan coins have blurred piping, sticky strokes and serious defects. In 1 yuan counterfeit currency, the phenomenon of uneven thickness is also obvious. Some criminals also use game cards to make 1 yuan counterfeit money. Although the diameter and thickness of these game cards are close to 1 yuan, they are well-made, and the patterns are quite different from those of 1 yuan, so it is not difficult to distinguish them with a little attention.

We can also distinguish the authenticity of the 1 yuan coin from the relative position of the front and back patterns. According to the technical standard, the graphic center lines of the front and back of the 1 yuan coin should be right opposite, otherwise it will be treated as waste coins. In counterfeit money, it is very common that the center lines of the pictures and texts on the front and back are not aligned. However, at present, it is found in the circulation field that some real coins of 1 yuan are also upside down to varying degrees. So this method is for reference only, not absolute.

1. The unit of RMB is Yuan, and the monetary unit of RMB is Jiao and Min. 1 yuan equals 10 angle, 1 angle equals 10 minute. Extended information Since 1997, China Consumers Association has released major hidden dangers and consumption traps involving consumers' personal and property safety in the form of "consumption warning" to remind consumers not to be hurt by dangerous consumption methods. Consumption early warning system has played a very significant role in guiding consumption, and also effectively promoted the solution of some major hidden dangers. China Consumers Association has established two authoritative media, China Consumers Magazine and China Consumers Association Information Network, as a powerful way for consumers to provide information and consulting services. As a way to provide consumers with consumer information and consulting services, China Consumers Association established the monthly magazine "Consumers of China" on 1994, which has columns such as comparative experiments, authoritative testing, special surveys and consumer warnings to answer questions for consumers.

Second, the number of consumers who refuse to accept cash complaints is how many consumers find that they refuse to accept or take discriminatory measures to exclude cash. They can complain and report through the financial consumption hotline of the People's Bank of China 12363, and the People's Bank of China will deal with it in time with relevant departments. According to Announcement [20 18]No. 10 of the People's Bank of China, the legal tender in People's Republic of China (PRC) is RMB, including banknotes and coins. No unit or individual may refuse to accept cash in the form of standard terms, notices, statements and notices. Except that non-cash payment instruments should be used according to law.