Excavated Medium Antique Heishi Ostrich Shell Beads, Mali
Some variation in mix of diameter of beads. 4-12mm mixed diameter beads on 26 inch strands. Most beads 6-10mm.
Good condition given age, each strand uniquely nice.
The strands in the photos are representative of current stock. Yours will be very similar.
Beads are estimated to be older than 100 and up to 1000 years old.
African Item 0643med