Moksha, voici la réponse de mon ami:
"The characters on the cartouche means the following:
1st column from the right: Ming dynasty, year of Shun-Tak
2nd column from the right: 5th year (of Shun-Tak) supervise
3rd column from the right: department of production officer
4th column from the right: Ng-Bon-Chor (a name) made
Ming dynasty, 5th year of Shun-Tek was 1430 of our calendar. He was the 5th King of the Ming dynasty.
Apparently bronze vessels were quite popular at that time, but difficult to tell whether it is genuine or not."