Round coin with a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Qianlong tongbao (top-bottom-right-left) in Chinese characters are on the obverse; boo nan left-right (mintmark) in Manchu are on the reverse. Flaws and pits in the rim; extra metal is in the centre hole.

Round coin with a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Qianlong tongbao (top-bottom-right-left) in Chinese characters are on the obverse; boo nan left-right (mintmark) in Manchu are on the reverse. Extra metal is inside the centre rim; rough rims.

Round coin with a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Jiaqing tongbao (top-bottom-right-left) in Chinese characters are on the obverse; boo nan left-right (mintmark) in Manchu are on the reverse. Centre hole is not square; raised field on the reverse top; inner rim is partly missing on the obverse; uneven rim on the top-right; rim pits.

Round coin wit a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Qianlong tongbao (top-bottom-right-left) in Chinese characters are on the obverse; boo nan left-right (mintmark) in Manchu are on the reverse. Raised fields on the obverse top and bottom; extra metal is in the centre hole; rim flaws; pits.

Round coin with a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Qianlong tongbao (top-bottom-right-left) in Chinese characters are on the obverse; boo nan left-right (mintmark) in Manchu are on the reverse. Raised field on the bottom reverse; rough, pitted surfaces; centre hole is not square.

Round coin with a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Qianlong tongbao (top-bottom-right-left) in Chinese characters are on the obverse; boo nan left-right (mintmark) in Manchu are on the reverse. Extra metal is at the rim top-left; rough rims; extra metal is in the centre hole.

Round coin with a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Qianlong tongbao (top-bottom-right-left) in Chinese characters are on the obverse; boo nan left-right (mintmark) in Manchu are on the reverse. Uneven centre rim; rough, pitted surfaces.

Round coin with a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Qianlong tongbao (top-bottom-right-left) in Chinese characters are on the obverse; boo nan left-right (mintmark) in Manchu are on the reverse. Extra metal is in the centre hole; rough, pitted surfaces.

Round, 4-sided hole in centre, rims around outer edge and centre hole, obverse 4 characters, character on reverse. Kaiyuan tongbao (top-bottom-right-left) in orthodox Chinese characters on obverse; tan (left), mintmark, Chinese character on reverse. Inner hole off-centre.

Round, 4-sided hole in centre, rims around outer edge and centre hole, obverse 4 characters, character and dot on reverse. Kaiyuan tongbao (top-bottom-right-left) in orthodox Chinese characters on obverse; tan (left), mintmark, Chinese character, dot (top) on reverse. Inner hole off-centre.