I am beginning to list a number of carved Indonesian artifacts which I bought in Bali and Java and Sumatra on a trip in the mid-1990s. They are of various materials and styles, but all are quite nicely done, in the old style if not actually antique.
This is a small medicine container, probably from Lombok. I bought it at an "antique" shop in Ubud, Bali. I believe it to be older, but cannot verify that information. Total height is 3.8 inches. The stopper is carved water buffalo horn, and the container is decorated bone with small horn insets. Photo shows the detail of the carving. The two pieces fit together by pressure.