I might not be an expert on chips. But I do know about preservation of these items. A wall display is beautiful and the chips are enclosed in a glass frame. But exposure to light, various temperatures, cooking fumes and perhaps cigarette smoke will dis-color, fade and age your chips over the years. In the safety of a box or binders, they will last virtually forever. And they won't lose their value from this damaging process.
CHEERS!!!!
Burt