https://www.imes.boj.or.jp/cm/english/collection/photobook/

Libreto informativo completo en línea

https://www.imes.boj.or.jp/cm/english/

PDFs descargables

https://www.imes.boj.or.jp/cm/english/collection/photobook/index.html

Enlace al Museo

https://en.wikipedia.org/wiki/Currency_Museum_of_the_Bank_of_Japan

https://www.boj.or.jp/en/announcements/education/data/boj_pamphlet.pdf

http://www.imperio-numismatico.com/t119222-1-bu-gin-de-la-era-tenpo-del-japon#1067698

https://www.imes.boj.or.jp/cm/english/collection/senpeikan_e.pdf

Impresinante colección del British Museum

https://www.britishmuseum.org/pdf/Catalogue%20of%20the%20Japanese%20Coin%20Collection.pdf

https://www.sixbid.com/browse.html?auction=4530

https://www.shakaika.jp/blog/9882/zouheikyoku_tokyo/