Ask an expert to identify what silver dollar this is.

This is the silver dollar of the birthday girl in Taiwan Province Province. This birthday silver cake is 39 mm in diameter and 2.5 mm in thickness. It has a perfect appearance and a natural patina. This coin is commonly known as Laogong Silver and Laogong Cake. During the 17th and 18th years of Daoguang reign in Qing Dynasty (1837~ 1838), Zhang Wen held an uprising in Qingbaikou, Xinxiang County, Taiwan Province Province, and the local government of Taiwan Province Province minted this kind of silver coin to increase the salary. It has the characteristics of early coinage. In the middle and upper part of the coin face, there is the statue of the birthday star, and on the left and right are the seal characters of "Daoguang Nianzao" and "Wenzu Silver Cake". There is a Baoding pattern on the back, surrounded by Manchu "Treasure of Taiwan Province", and there are 12 circles and 16 stars, which are very rare and worth collecting.

It is reported that from the mid-Ming Dynasty, some western businessmen began to trade in the southeast coastal areas of China, and foreign silver dollars also flowed into China. With the development of trade, the number of foreign silver dollars flowing into China has increased correspondingly, and the use area has also expanded. Under the influence of foreign silver dollars, the southeast coastal provinces of China took the lead in appearing silver coins modeled after foreign silver dollars. Because they are all made by artificial soil method, the production process is rough and cake-shaped, so they are called "silver cakes". According to the physical data, Taiwan Province Province is the earliest province in China to cast silver cakes.

The casting time of Shouxing Silver Cake in Taiwan Province Province is as long as 30 years, from Daoguang to Tongzhi. Among the handed down objects, Daoguang and Tongzhi have a clear date. Among them, the pattern of the birthday star cast by Daoguang Nian is in the center of the front, with the words "Daoguang Nian Zhu" and "Wenzu Silver Cake" on the left and right sides respectively, and the inscription "Ku Ping Mi Qi" below; Baoding pattern is cast in the middle of the back, and the words "Taiwan House Casting" are cast on the outer ring. During the Tongzhi period, the pattern of longevity was cast in the center of the front, the words "First year of Tongzhi" and "Made in Chiayi County" were cast on the left and right sides respectively, and the words "Footprint of Military Pay Pass" were cast on the back.

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