We bought a couple of these objects from an antique dealer in America,they don't look very old but were described as Shaker Toys ($25 each).
It represents a hand,the thumb turns and articulates the fingers making a clacking sound.
A clever design made precisely out of wood,kind of creepy as well.
Approximately 55mm high x 220mm long,good vintage condition although it wouldn't be recommended for kids to play roughly with.
Please note they are $25 each,they are similar so they are listed separately by the colour of the index fingers,red and pale.