Western Han

Ban Liang
Ban Liang means half liang see page about weight units. One liang was at this time 15,6 grams so these coins should ideally weigh little less than 8 grams. There are 4 and 8 zhu Ban Liang: the 8 zhu weighs around 5.3 grams and the 4 zhu around 2.6 grams. Then there is the wu fen (1/5) Ban Liang that should be 2 zhu and 4 lei, 1/5 of a Qin Ban Liang. All others should be variants of the standard.

   
 Schjöth 86. Elm pot Ban Liang 0,34 gr. 13 m.m. Emperor Gao (B.C. 206-194).

 
Schjöth 83. Ban Liang. 6,2 gr. 29 m.m. Empress Gao (B.C. 187-179).

Ban Liang. 5,2 gr. 30 m.m. Notice the two casting fins that are not filed on this coin.

Deng Tong Ban Liang. 24 m.m. 2,4 gr. Deng Tong was a rich businessman in Sichuan province who was allowed by the emperor to cast coins. His coins were cast with one or two squares above or below the hole.

Schjöth 83. Ban Liang. 4,7 gr. 28 m.m. Empress Gao (B.C. 187-179).

Ding 422. Ban Liang. 2,2 gr. 24 m.m. Emperor Wen (B.C. 179-156).

Three Ban Liang with vertical lines (Extra denomination or mint mark?). 
All are 2,3 mm. I=2,76 gr. //=2,83 gr. III=2,54 gr.
From the period of Emperor Wen (B.C. 179-156). According to Francois Thierry's catalogue Monnaies Chinoises vol. 2, # 109-114 they are local or private issues.
Note that the liang character is different on the coin in the middle. On this coin the two lines are also tilted.

Schjöth 104, Ding 432, Ren 56. 2,6 gr. 24 m.m.
Ban Liang with rim.  Emperor Wu (B.C. 140-86) cast from B.C. 135-118.

Schjöth 104, Ding 432, Ren 56. 2, 5 gr. 24 m.m.
Ban Liang with rim. Emperor Wu (B.C. 140-86) cast from B.C. 135-118.

2,3 gr. Ban Liang with rim. Notice the two casting fins that are not filed on this coin.
Emperor Wu (B.C. 140-86) cast from B.C. 135-118.

3,0 gr. 24 m.m.
Same type as above but iron. The earliest type of iron coin in China. 
No references in catalogues. Unearthed in Sichuan. 

Ban Liang. 3,4 gr. 24 m.m. Same type as above but Lead. 
Unearthed in Xian, Shaanxi province.

Ban Liang. 2,9 gr. 22 m.m. Lead.

 
Schjöth 106 Ding 433. Ban Liang with rim. 2,7 gr. 26 m.m.

Wu Zhu

Han Wu Zhu. 3,9 gr. 

 
Han Wu Zhu. 3,1 gr. 

 
Han Wu Zhu. 2,7 gr.

Han Wu Zhu with a dot above hole.

  
Schjöth 300 Ding 654. Wu Zhu with horizontal extra wu on top. 3,0 gr.

Schjöth 258. Wu Zhu. Notice the dot at inner rim below. 2,7 gr.

Ding 597. Schjöth 208. "Chicken eye" Wu Zhu. 0,8 gr.

Semi-finished Wu Zhu. 4,8 gr. 27 m.m.
The two parts of the mold have not been aligned properly.