I've known several stamp collectors throughout my life. There were some in my family many years ago, and I'd never heard of the perforations you mentioned. That's very interesting, and obviously, as you rightly point out, it elevates the status of the piece and makes it attractive to collectors. I really liked the album you have; it's very well-maintained, just like your collections. You certainly know your stuff, because I enjoyed reading it from beginning to end. You also took some great photos of the stamps. A pleasure to meet you through your post 🙌😀💛... You Absolutely Rock!!! 👍😎🔥📸❤️