Plain, unplated brass will darken in time. For those of us who appreciate brass, we prefer this look; reminiscent of an old microscope, or a piece of gear from a sailing ship. But if you like your brass to shine, it can be polished with a cloth and most any commercial metal polish, and it will shine like gold. A good choice for instruments with gold colored hardware, and a natural for those who fancy a retro look.
Shubb's Model 5 Banjo Capo is 1.5″ wide and is designed to fit banjos as well as most mandolins, bouzoukis, many tenor guitars, and other instruments with narrow fretboards.