My father-in-law passed away 30 years ago. We knew he had a Gillette Fat Boy even though we didn’t know the model at the time, but remembered the plastic case with the round lens. My wife was digging around in our linen closet today and out came the Fatboy. We’ve wanted to give the razor to my oldest son, but by now we thought it was gone forever. The razor was loaded with crud so I immediately started to clean it up. It’s an E2. 2nd quarter 1959. The top photo is without any cleanup. Bottom is after initial cleaning with more to come.