One concern is certainly the humidity - I simply don't know what the effects of this kind of storage might have on the ribbons (I'm more concerned with the ribbons than the medals, mold or chemical attack?) so I'm just assuming that lower humidity is better, but not bone dry! I live in neither a dry nor humid climate, fairly mild which is a plus. I sure gotcha on that entropy thing! Just want to delay it as long as possible. I will eventually get around to posting some photos, but the sad truth is, I' horrible at taking pictures!!! Some of it might be my camera (more lack lack of knowledge of using it effectively), but most of it is my lack of skill.... Something else I've considered to protect the medals themselves is using a wax like Renaissance wax. I've used this on old cartridges and it seems to protect pretty well - thought maybe this would help in any further "aging" of medal metal. Then again, cartridges are smooth so the wax is easy to apply, might be hard with medals with all the engravings, embossings, uneven surfaces, etc. O.K., maybe scratch that idea!