I believe there was once a separate winder with string used to set this top spinning, but it's such a beautiful object I would just set it on the shelf or desk now to admire. I believe the wood is likely walnut, with a steel spinning tip at the end and an inset lighter wood handle. So pretty.
5 7/8" l x 3 3/8" in diameter. Definitely once used, with surface scratches and little dings to the wood all over, all to the good I think.