China, Qing Dynasty, a group of 4x brass 10 cash, Tong Zhi Zhong Bao, 1862-1874, including a trio from Bao Quan (Board of Revenue) mint and 1x from Bao Yuan (Ministry of Works) mint; 29.1x1.7mm, 31.6x2.0mm, 30.9x2.5mm and 31x1.8mm; weigh 7.9g, 10.5g, 12.8g and 9.0g; graded Zhong Qian 80, 80, 80 and 82 respectively (4)