Here's the coin before treatment: And here's the coin after the application of Ren Wax. The lighting for this photo was lower (cloudy day), making it appear darker. I did adjust the lighting setting in Photoshop to make the coin somewhat brighter: In the hand, the treated coin appears shinier than it was before the application, and viewed that way the encrusted surfaces are not as intrusive, especially on the reverse. There are a couple of spots on the reverse, on the right part of the "M" that are quite hard, so I do not suspect bronze disease, although I have keeping an eye on it. I should mention that before applying the Ren Wax the was soaked in olive oil about a month ago. Thanks!