My old collection was in non recessed screw downs for probably 25 years. I posted some of them here and people went crazy. I started changing them over to recessed screw downs but the old ones had no issues at all. Every card was completely fine. I probably had three dozen vintage cards in them. I think where you store them is as important if not more on how you store them. Mine were always in an airtight tub and in a dry dark place. Even all my raw cards were as perfect as the day I stored them. Moisture and light are bad for any collectibles especially paper ones.