This is a work made by Diahi Foreign Firm:

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The biggest feature of coins is: face value, because the most basic attribute of coins is exchange value.

Coin buttons with bronze bronzing mechanism are a kind of buttons on people's clothes in the late Qing Dynasty and the early Republic of China, which can be seen from the palace costumes of the Qing Dynasty collected by the Palace Museum to the ancestral clothes preserved in rural people's homes.

The back of the coin buckle of copper bronzing mechanism is mainly composed of characters, and the name of the manufacturer, product quality assurance and product origin are generally indicated in Chinese and English fonts. Chinese characters are usually manufacturers, that is, the names of foreign firms at that time. For example: Galloway, Busch Douhang, Connerford Foreign Firm, Dias Foreign Firm, Feilimo Foreign Firm, Yifeng, Guangfeng, Wan Shunfeng, Huafeng, Mo Lifeng, Long Fu, Shun Jinlong, Shuncheng, Shunshun, Shunfa, Xinglong Foreign Firm, Xingxing Foreign Firm, Woori, Murray, Medicis Foreign Firm, Li Sen, Xinli, etc. English words are usually the content of product quality assurance: rich treble gold plating (gorgeous three-layer gold plating), treble silver plating (three-layer silver plating), golden button (golden button), orange gold plating (orange gold plating), WARRANTED (guaranteed and worth having), best quality (best quality) and PATENT (patent). Compared with the manufacturer's name and product quality assurance, there are fewer words of origin on the back of the coin buckle of copper bronzing mechanism, and the author only collects a few place names such as Shanghai, Tianjin, London and Japan. The characters on the back of the coin buckle of bronze bronzing mechanism are mostly in Chinese and English, which are generally read in turn, most of which are male and only a few are female. In addition to characters, there are also symbols deliberately made by the makers on the back of coin buckles with copper bronzing mechanism, such as *, ●, ☆, ◎, ⊙,+and so on. These symbols are either interspersed with characters or symmetrical with characters, so that the back of coin buckle of copper bronzing mechanism forms a whole with beautiful characters.