This is a strap, keyholder, or charm.
Here's a great warehouse find from 2002: a classy ladder-shaped strap with little clip-on figures of Lupin III and Goemon! Act fast!
Please note that figures such as this are mass produced and as a result some inconsistencies in finish and painting may occur; these are not considered manufacturer's defects. If you absolutely must have perfection, prepare to do some touch-up work on your own.