![File:Chong Zhen Tong Bao (崇禎通寶) - Rev. large Dot above, Zhen straight, Tong 2-dot, closed head with beak (as -325). Avg 25.3mm, 3.8gm. (M2179) - Scott Semans 04.jpg - Wikimedia Commons File:Chong Zhen Tong Bao (崇禎通寶) - Rev. large Dot above, Zhen straight, Tong 2-dot, closed head with beak (as -325). Avg 25.3mm, 3.8gm. (M2179) - Scott Semans 04.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/a/ad/Chong_Zhen_Tong_Bao_%28%E5%B4%87%E7%A6%8E%E9%80%9A%E5%AF%B6%29_-_Rev._large_Dot_above%2C_Zhen_straight%2C_Tong_2-dot%2C_closed_head_with_beak_%28as_-325%29._Avg_25.3mm%2C_3.8gm._%28M2179%29_-_Scott_Semans_04.jpg)
File:Chong Zhen Tong Bao (崇禎通寶) - Rev. large Dot above, Zhen straight, Tong 2-dot, closed head with beak (as -325). Avg 25.3mm, 3.8gm. (M2179) - Scott Semans 04.jpg - Wikimedia Commons
![Zhen TONG | Cornell University, Ithaca | CU | Department of Chemistry and Chemical Biology | Research profile Zhen TONG | Cornell University, Ithaca | CU | Department of Chemistry and Chemical Biology | Research profile](https://i1.rgstatic.net/ii/profile.image/272283478523959-1441928848868_Q512/Zhen-Tong-6.jpg)
Zhen TONG | Cornell University, Ithaca | CU | Department of Chemistry and Chemical Biology | Research profile
![Zhen TONG | Professor | Doctor of Philosophy | Shanghai Jiao Tong University, Shanghai | SJTU | School of Mechanical Engineering | Research profile Zhen TONG | Professor | Doctor of Philosophy | Shanghai Jiao Tong University, Shanghai | SJTU | School of Mechanical Engineering | Research profile](https://i1.rgstatic.net/ii/profile.image/11431281136475912-1680534010297_Q512/Zhen-Tong-9.jpg)
Zhen TONG | Professor | Doctor of Philosophy | Shanghai Jiao Tong University, Shanghai | SJTU | School of Mechanical Engineering | Research profile
![File:Chong Zhen Tong Bao (崇禎通寶) - 1628-1644 Zhen angled variety, Tong 1-dot, Bao bei closed, Zhen L short angled dot above, bei open. - Scott Semans 01.jpg - Wikipedia File:Chong Zhen Tong Bao (崇禎通寶) - 1628-1644 Zhen angled variety, Tong 1-dot, Bao bei closed, Zhen L short angled dot above, bei open. - Scott Semans 01.jpg - Wikipedia](https://upload.wikimedia.org/wikipedia/commons/f/f7/Chong_Zhen_Tong_Bao_%28%E5%B4%87%E7%A6%8E%E9%80%9A%E5%AF%B6%29_-_1628-1644_Zhen_angled_variety%2C_Tong_1-dot%2C_Bao_bei_closed%2C_Zhen_L_short_angled_dot_above%2C_bei_open._-_Scott_Semans_01.jpg)
File:Chong Zhen Tong Bao (崇禎通寶) - 1628-1644 Zhen angled variety, Tong 1-dot, Bao bei closed, Zhen L short angled dot above, bei open. - Scott Semans 01.jpg - Wikipedia
![File:Chong Zhen Tong Bao (崇禎通寶) - Rev. large Dot above, Zhen straight, Tong 2-dot, closed head with beak (as -325). Avg 25.3mm, 3.8gm. (M2179) - Scott Semans 02.jpg - Wikimedia Commons File:Chong Zhen Tong Bao (崇禎通寶) - Rev. large Dot above, Zhen straight, Tong 2-dot, closed head with beak (as -325). Avg 25.3mm, 3.8gm. (M2179) - Scott Semans 02.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/9/9f/Chong_Zhen_Tong_Bao_%28%E5%B4%87%E7%A6%8E%E9%80%9A%E5%AF%B6%29_-_Rev._large_Dot_above%2C_Zhen_straight%2C_Tong_2-dot%2C_closed_head_with_beak_%28as_-325%29._Avg_25.3mm%2C_3.8gm._%28M2179%29_-_Scott_Semans_02.jpg)