And write my quantities on the pages? That's one option, but then every time I get a new book I have to transcribe quantities into the new book. Maybe some people have just one of each, but we have many dupes and also many that we don't have or care to have. I also wouldn't know the value of the collection, how many dupes I have, the scrap value of either just the dupes or the whole collection, a list of just the ones I need, etc.

This is exactly the kind of discussion I'd like to see here, though. Thanks!