Chinese nut carved beads

Small carved beads, chinese, total of nine beads. They appear to be olive, nut pit or possibly boxwood. One is a tassle bead. The bead shown here has over 50 tiny carved men, their faces are smaller than a grain of rice. The beads are microscopically carved, and appear to be tiered. I have more pictures if necessary. They dipict different scenes including military, farm, lotus, crane, shops and cafes. All are hollow beads with <1/4" hole at each end. Two beads are partially damaged. The lines on the bottom side of the tassle bead can only be seen with an eye lupe. Any information on date and approximate value would be appreciated.

Excellent