Secret society coins were not meant for circulation and functions more like membership tokens or ritualistic functions. From the west to the far East, various societies have adopted this practice with varying degrees of success and acceptance by the powers that be. I'll start off with one from China. Golden Coin Society (金钱会) 1858-1862 Yi Ji Jin Qian 義記金钱 membership coin. Ex CNG A branch of the Heaven and Earth Society 天地会，which was active during the Taiping Rebellion in China. Although not a member of the Taiping, theirs was an auxiliary rebel force that shared a common belief in overthrowing the Manchus albeit more for revival of Han rule as opposed to establishing a Pseudo Christian Kingdom like the Taiping. Their struggle gathered initial gains around Zhejiang province but soon faltered and was ultimately wiped out in 1862 by the Qing forces. This coin comes with 2 variants. Those with Chinese inscriptions at the back belonged to leaders of the society whilst ordinary members carry those without. Given a lack of proper casting facilities, multiple materials and differences in the quality and calligraphy exists. People bearing these coins were protected by members of the society but unfortunately many were melted down or surrendered to the imperial forces as ownership implies association with the rebels and thus risks execution.