一 combined with 弋 or 戈 to prevent forgery in banking statements. Nowadays, 壹 is used instead.
Oracle script
(~1250-1000 BC)Bronze script
Early Western Zhou (~1000 BC)Seal script
Shuowen (~100 AD)Clerical script
Wu (Three Kingdoms: 222-280 AD)Regular script
Modernnumber one; archaic variant of 壹 banker's anti-fraud numeral one
