Asian hallmark or makers mark?

[ladymacbeth1263]

I hope I am posting this pic correctly. This is some Asian mark on the bottom of 3 hammered Sterling cups that were sold as accompaniments to a hammered sterling flask. The flask is marked 950 Sterling. The 3 cups have this mark. Help. THanks.

[MG]

Hello
Its either Japanese or Korean
They both used this 'Jungin' (pure silver) mark
thank you