Waverly Tuners. If you want a high-quality open-back tuner for an elegant vintage look, Waverly may be just the thing. They work smoothly and have a 16:1 gear ratio. Vintage open-back tuning machines usually didn't last very long, but Waverly machines will last a lifetime. Waverly machines have twin worm bushings as well as a patented tension bushing to reduce backlash. Available in chrome and gold with a variety of knob styles and materials (like ivoroid, fossilized ivory, and pearloid).
Keep in mind that open-back designs require more care for worry-free operation.