Envelope advert

My daughter received this folded envelope containing a free sim card today. The design is traditional and well-known, but this is the first time I’ve seen what must be a substantial use of it. As with all these types of commercial folds, I wonder who actually did the folding?

Below are diagrams by Matthias Gutfeldt from his site. used one of his paper plane designs in a book many years ago and since he hasn’t updated the site since 2004, I guess he won’t mind me poaching the image!


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