Start with one bead between each of the rungs of the ladder. The aim is to get all the beads together on the cord without removing them from the cord at any time.
Four of the ends to the rungs of the ladder have been replaced with later “buttons”. Otherwise the puzzle appears to be complete.
A set containing this puzzle is illustrated in Crossman: The Decorative Arts of the China Trade, p. 296.
An ingenious arrangement of strings which can be adjusted to create different coloured patterns.
An example can be seen rolled up in the illustration on p. 296 of Crossman: Decorative Arts of the China Trade.