Loosely framed.......... Not glued. I would never do anything to hinder the value of that book. And; certainly, it would be even better to 'never' open it.
You know.. about 3-4 years when I was selling the 43 autographs (sealed) Editions (17 or so) on eBay; the highest price paid was $600.00. Don't you know that any of those fine folks that saw that recent auction of $1751 for an unsigned copy, are just grinning from ear to ear now.