Really a wonderful small ball in cage whimsy, with what appears to be "08" carved at one end, I'd assume dating it to 1908. It for sure feels that old, with a nice patina to the dark wood, super smooth from age and wear. With little loops carved on either end, it would be a nice one to wear as a pendant, or to just hang from a nail or hook on the wall.
3 7/8" long x 15/16 wide and deep. Very good condition and structurally super solid, with no notable cracks, splits or chips.