I found out the information from the Poly Coin Fine Auction in 2015 to answer your questions one by one. The specific price depends on the condition of the coin.

Jiaqing:

Made during the Jiaqing period of Renzong. The face is read directly in regular script, and the Manchu text on the back is the treasure on the left, and the name of the foundry on the right; the source is Su, Chang, Zhejiang, Fuwu, Nanchuan, Shanxi, Shaanxi, Gongyun, Donggui, Qian, Yi, and Aksu. The coin contains half lead and half tin, so the quality of the coin is gray and fragile. , generally 2.2---2.6 cm in diameter, weighing 2--4 grams, a few coins can be seen with star and moon patterns, and there are also coins with auspicious words, such as Fukang Shouning, the world is peaceful. At this time, the Qing Dynasty was already declining. A rare and rare item passed down from generation to generation.

Jiaqing Tongbao regular script is folded with two backs of Baoquanju, Jiaqing Tongbao regular script is folded with two backs of "Gui", Jiaqing Tongbao regular script is folded with two backs of "Gui"

, Jiaqing Tongbao regular script is folded with two backs of Bao Straight Bureau, Jiaqing Tongbao regular script folded with two backs and Baosu Bureau wide margin, Jiaqing Tongbao regular script Xiaoping carried Baoyuan Bureau carved mother, Jiaqing Tongbao regular script folded two backs Baoyuan Bureau carved mother, Jiaqing Tongbao regular script Xiaoping carried Baoyuan Bureau carved mother

, Jiaqing Tongbao regular script folded ten times and carried Baochuan Bureau. Price 5,000 yuan ~ 1.89 million

Qianlong:

Qianlong Tongbao regular script Xiaoping was produced under the supervision of multiple bureaus. "Fu", Qianlong Tongbao regular script Xiaoping carries Aksu Bureau on his back,

Qianlong Tongbao regular script Xiaoping carries Baoquan Bureau carved mother, Qianlong Tongbao regular script Xiaoping carries the carved mother, Qianlong Tongbao regular script Xiaoping carries Baoshan Bureau carved mother, Qianlong Tongbao regular script Xiaoping carried the mother coin of Baoquanju on his back, Qianlong Tongbao in regular script carried Baogongju with ten folds, and Qianlong Tongbao in regular script carried the extra large Baoquanju. Price 20 yuan ~ 2.17 million

Daoguang:

Made during the Daoguang reign of Xuanzong. The shape is the same as the Jiaqing coin, with regular script on the face and direct reading; the name of the bureau is recorded in Manchu on the back: Quanyuan Zhisu, Nanchang, Wuchuan, Zhejiang, Fujian, Shaanxi, Guangxi, Yundong, Qian, Yili, Aksu, Kuqa, Baoxin. Daoguang coins are roughly made, with different sizes and weights. Generally, they are 2.2-2.4 centimeters in diameter and weigh 2.5-3.6 grams. Due to the Qing government's inability to make ends meet, Xinjiang's Aksu, Kuqa and Baoxin three bureaus began to mint the value of five. When Ten coins is also the beginning of clear money's virtual value. There are few rare products handed down from generation to generation.

Daoguang Tongbao's regular script is folded on the back of Baoquan Bureau, Daoguang Tongbao's regular script is on Xiaoping's back "one cent", Daoguang Tongbao's regular script is on Xiaoping's back "eighteen years", Daoguang Tongbao's regular script is on Xiaoping's back and is finely cast in Aksu Bureau, Daoguang Tongbao's regular script is on the back of Aksu Bureau The regular script of Daoguang Tongbao is carried by Xiaoping on the back of Aksu Bureau, the regular script of Daoguang Tongbao is Xiaoping on the back of Baosu Bureau, the regular script of Daoguang Tongbao is Xiaoping on the back of Baoquan Bureau, and the regular script of Daoguang Tongbao is Xiaoping on the back of Baoyuan Bureau. The price ranges from 10 yuan to 350,000 yuan. .