皇朝 こうちょう じゅう せんではありません
kōchōjūni sendewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 皇朝十二銭

1. It is not twelve mon of the Imperial Dynasty.; It is not worth twelve mon of the Imperial Dynasty.

Negative
Polite
Formal Register