this is a typical necklace combination from the early C20th- there are usually large-holed glass, stone, wood, stained bone "coral" twigs, and caricature double-faced heads of demons or other subjects made from some kind of moulded composition that may be finished to look lacquered. Sometimes they have metal sleeves or collars at either end of the hole.
they seem to have been made for sale to tourists of the time rather than for local taste. they arent Ojime...
i have strands with very similar sequences of these beads.
Frederick may also ask whether the bead types are in multiples of 4 as they could have been used to weigh down the corners of small table cloths, and that could direct the discussion further...