The Boo-chang mint operated under the Board of Revenue in Changsha, Hunan province, during one of the most catastrophic periods in Qing fiscal history. The Taiping Heavenly Kingdom had seized Nanjing in 1853 and was actively disrupting provincial commerce and supply lines throughout central China. Brass substituted for the standard copper-zinc alloy as metal supplies grew erratic — a substitution visible across multiple provincial mints during this window.
Hunan was a front-line province during these years, not a quiet administrative backwater.
The Boo-chang mint operated under the Board of Revenue in Changsha, Hunan province, during one of the most catastrophic periods in Qing fiscal history. The Taiping Heavenly Kingdom had seized Nanjing in 1853 and was actively disrupting provincial commerce and supply lines throughout central China. Brass substituted for the standard copper-zinc alloy as metal supplies grew erratic — a substitution visible across multiple provincial mints during this window.
Hunan was a front-line province during these years, not a quiet administrative backwater.