Hmm... well, what can I tell you? The copy I saw didn't have silver, but there are three possible explanations for this.As for the edges there is for sure one copy in a scene from the movie that exhibits silver gilded edges. (The Gryffindor common room, where they pass the book around Harry.) I've reviewed it several times and it's definitely reflecting the light quite strongly. I've noticed there are some close ups of the cover in a couple of scenes, and they are actually different in wear and texture.
Really great to have some notes of some of the props, thanks again!
1. The silver is only on the top and side, not on the bottom, the way the book was positioned made is very difficult to see the side and impossible to see the top
2. Variation, variation, variation. It's a universal excuse for not 100% SA props.
3. The Mira and Eduardo may very well have done exactly what we do, slap a printed cover on old books, and in this case, staple or sew in some specific pages. They could've used one book that had the silver, and one the didn't
PS: When I finally do find the time to make my HBP potions book, I do want the silver, how would I put that on the pages?