Need help cleaning copper ring

[05Duramax]

Found a old copper ring (looks old now) in Alaska and was wondering what the best way to clean copper is. Will try to post before and after pics of it when I get home. I'm deployed right now. Any thoughts.

Thanks D

 

Amazon Forum Fav 👍

Upgraded Night Vision Monocular Digital Infrared Monocular Telescope for 100% Darkness with 8X Zoom - Grab it through Amazon!