Posted By:
MarkWilliam:
I would just put it up against the glass, to flatten it out to your liking. I have had rare/expensive pennants up against glass for close to 20 years, and have never had a sticking problem (or any other problem for that manner). Perhaps I'm in the minority, but I would rank the following as the biggest detriments to condition...
1. Sunlight
2. Dust
3. Access to pets
4. Access to children
Obviously, photos (and other glossy items) should not touch glass directly , as they will eventually stick. But your ad piece should be fine. You could always slip it into one of those archival clear plastic sleeves, and then frame it with gentle pressure up against the glass. That's what I would do... especially considering it is not really an expensive piece.