清代鹹豐年間，因西方資本主義勢力入侵及國內太平天國起義的影響，導致政局危機四伏，財政基本枯竭。清政府為挽救幣制行將崩之勢，而鑄造鹹豐大錢。當百以下稱「重寶」，「鹹豐重寶」又可分為當四、當五、當八、當十、當二十、當三十、當四十、當五十等。
During Xianfeng Period of Qing Dynasty, because of the invasion of Western capitalist power and the influence of the uprising of Taiping Heavenly Kingdom in China, the political situation was in danger and the finance was basically exhausted. In order to save the currency system, the Qing government cast Xianfeng coins. Dangbai is hereinafter referred to as "heavy treasure" and "Xianfeng heavy treasure" can be divided into Dang 4, Dang 5, Dang 8, Dang 10, Dang 20, Dang 30, Dang 40, Dang 50, etc.
鹹豐錢幣由於品種繁茂，多姿多彩，錢文俊美，近幾年全線飄紅，其中的珍稀品種——鹹豐重寶當五十文更是倍受青睞。
In recent years, Xianfeng coins are all in red because of their variety, variety and beauty. Among them, Xianfeng heavy treasure is more popular.
下圖即為沈先生帶來的一枚鹹豐重寶當五十文銅錢。正面鑄有楷書「鹹豐重寶」從上而下而右而左直讀；錢背上下寫有漢文「當五十」二字，左右用滿文寫有錢局的名稱「寶昌」。
The figure below shows a piece of Xianfeng treasure that Mr. Shen brought as 50 Wen copper coins. On the front is the regular script "Xianfeng treasure", which is read directly from top to bottom, right and left; on the back of Qian is the Chinese character "Dang 50", and on the left and right is the Manchu character "Baochang".
直徑：5.16cm 厚：0.32cm 重：44.7g
Diameter: 5.16cm Thick: 0.32cm Weight: 44.7g
此枚鹹豐重寶版本比較高檔，字跡深俊，銅質精良，鑄工精細，包漿渾厚溫潤，字體清晰端莊，筆畫圓潤工整，中間穿正方形孔，在日光的照射下更散發出熠熠光輝。
The version of Xianfeng treasure is high-grade, with deep and handsome handwriting, excellent copper quality, fine casting, thick and warm slurry, clear and dignified font, round and neat strokes, square holes in the middle, and shining under the sunlight.
據《東華錄》載：鹹豐大錢的重量規定為當五十重一兩二錢；當百重一兩四錢；當五百重一兩六錢，當千重二兩，清庫平一兩約等於37.3克，一兩二錢約為44.7克。而該件藏品實際重量為44.7克。
According to donghualu, the weight of Xianfeng's big money is set to be fifty to twelve, one hundred to fourteen, five hundred to sixteen, one thousand to twenty, and one or two to thirty-seven.3 grams, one to twenty-two to forty-four.7 grams. The actual weight of the collection is 44.7g.
此幣銅質精良，精細雕刻而成。據《清史食貨老》載，朝廷規定「鹹豐當千、當五百淨銅鑄造，色紫；當百、當五十銅錫配鑄，色黃。」 鏽色包漿自然熟舊，收藏價值高。
This coin is made of fine copper and finely carved. According to the Qing Dynasty's history of food and goods, the imperial court stipulated that "Xianfeng should be cast with thousands of pure copper and five hundred pure copper, and the color should be purple; the color should be cast with hundreds of copper and fifty tin, and the color should be yellow." The rust color coating is naturally mature and has high collection value.