HKMAL collection
Ming dynasty (明朝) Emperor Xi Zong (Tian Qi) "Tian Qi Tong Bao (天啟通寶)" 1621-1627 AD, Hook Qi (鉤啟) (the obverse is similar type as Rev. Ru/入 variety) rare variety. It is unlisted in David Hartill.	Asia China 1621