This Barient #21 Two Speed Anodized Winch. Needs springs for two of the pawls.

Here is eBay’s goofy AI description:

Featuring a durable and reliable construction, this winch is built to last and will provide you with years of superior performance. Whether you're a seasoned sailor or just getting started, this Barient winch is the perfect addition to your sailing gear. So why wait? Order yours today and experience the best in sailing hardware!