While I have a pretty nice collection of Dunhills, until a month ago, they were all 1970s through current. No patent era pipes. The 1927 wasn't well-listed and the double patent caught my eye. A search revealed a Smokingpipes sold listing that mentioned that they were rare, that they'd seen only five or six, so for once, I placed a bid beyond the pure bargain level. I agree that it should clean up beautifully. I'm not concerned at all about the oxidation. The button looks to be in good shape and I don't see depressions. I'll post a photo following refurbishment. I've refurbished probably 200 pipes and am confident that I can do this one too, but I'm considering shipping this off for professional restoration.