Because there were fewer of the whiskers and wrinkles usually used in counterfeiting prevention, it took time to prepare the blocks; therefore its production was delayed as compared to Hideyo NOGUCHI's one thousand yen note and Yukichi FUKUZAWA's ten thousand yen note.
偽造防止に利用される髭や顔の皺がすくないため版を起こすのに手間取り、製造開始は野口英世の千円券、福澤諭吉の一万円券より遅れた。