I've just bought my first. 1887, Roman I. May I have, please, your opinions on grade? Secondly, how can I determine if this is a proof? It wasn't sold as such, but there's something about it that makes me think it might be. The fields have a mirror-like quality that I can't convey in a photo, and I don't think it's due to cleaning. It's quite dark toned, which again is not really apparent from the photos.