Booklady, I think these are also known as "Charity Boxes" where you toss in coins, sometimes they have a sprial inside a see-through globe of some sort and a sign at the top naming the charity. I saw one like this in the Charles Degaul (sp?) Airport in Paris last spring where people could throw their "archaic" coins and bills which would later be converted and donated for charity purposes.

By the way, I too saved a number of lower denomination peseta bills as well as at least 2 or 3 of each coin I could get my hands on over Christmas 2001.

Saludos, MadridMan