In 1900, the Gengzi Beijing Bureau produced a silver coin of Guangxu Yuanbaokuping three coins and six cents, which was cast after the original mold. Because the Beijing Bureau was destroyed by the "Gengzi Rebellion", the original coin was not issued. Except for the two polished-edged coins produced by the division in the UK, they are all post-cast plates, and few have been seen; the molds of the lot are exquisitely carved, the molds are deep, the plate bottom is flat, the dragon picture is unique, and the coin surface is full of silver light. The appearance is perfect.

The "Beijing Bureau" Gengzi series of silver coins are rare and rare among the modern Chinese machine-made coins. A full set of five pieces, with face values of seven cents for two cents, three cents for six cents, one coin for four cents, seven cents and two cents, and three cents Six cents. In the twenty-fifth year of Guangxu (1899), the Qing prince Yiqiu asked the Ministry of Households to try to establish a mint to make silver rounds in the capital. The performance was approved and named "Kyoto Manufacturing Silver Round Bureau", referred to as "Beijing Bureau", in March 1900 Order steam engine, flaking machine, lathe, printing machine and other miscellaneous equipment from the Birmingham Mint, UK, and deliver it before August 6 of that year. In 1900, the Boxer Rebellion started a prairie fire and spread to Beijing. On June 22, the Beijing Bureau was destroyed by war when the Boxer Group attacked the nearby Austrian embassy. According to data, the Beijing Bureau did not formally operate, and only a small number of two-corner and one-corner coins were tested.

During the war, workers rescued four sets of steel molds except the "Yijiao" steel mold, and sold them to the collector Fang Yaoyu. During the Republic of China, they were transferred to Shanghai collector Chen Rentao. During the period, the molds were lent to Shanghai coin merchant Wang Shouqian privately. There are several sets, so the Beijing Bureau silver coins are divided into original and post-cast versions. At present, the number of silver coins in the Beijing bureau is known: the polished-edge version of the sample coin produced by the engraver in the London workshop, with a full set of five denominations, and two sets; the original cast version of the Beijing bureau has only "two corners" and "one corner" in existence. There are two types, each with a quantity of about ten; the post-casting plate, estimated to have produced ten to fifteen sets, the number of "two corners" may be slightly lower than this. It can be seen that no matter what version of the Beijing Bureau silver coins are, they are rare and rare treasures.

The Beijing Bureau silver coin was first seen in the "Reference Book of Chinese Rare Coins" printed by Wang Shouqian in 1935, which contained only two types of two angles and one angle; Geng Aide published a full set of five in the "Examination of Chinese Currency Illustrated Notes" published in 1954. However, it shows that his Chinese friends stated that only the second corner and the first corner were produced by the Beijing bureau, and the rest were privately produced by "a certain Shanghai collector"; in the writings of early spring books such as Jiang Zhongchuan and Shi Jiagan, only the second corner was included. The Jiao and Yijiao coins are also precisely because of this. The Beijing Bureau and related files were destroyed by the Gengzi Rebellion, and the confusing life experience made it one of the most legendary Chinese silver coins. —Refer to "A Hundred Years of Silver Circle" edited by Sun Hao, Shanghai Science and Technology Press, 2012, pages 69-72.