I see that "The €20 banknotes of the first series will remain legal tender and continue to circulate alongside the new notes, but they will be gradually withdra

I see that "The €20 banknotes of the first series will remain legal tender and continue to circulate alongside the new notes, but they will be gradually withdrawn from circulation." http://www.new-euro-banknotes.eu/News-Events/PRESS-RELEASES-PRESS-KITS/NEW-%E2%82%AC20-BANKNOTE-STARTS-CIRCULATING-TODAY http://www.new-euro-banknotes.eu/News-Events/PRESS-RELEASES-... If I understand correctly, this is very much like the situation in the US, where there is no specific date on which the old bills change from being currency to being non-currency, which is what DrScump is getting at: "all an enemy has to attack are the simplest notes" (except for the way that it would be REAL WEIRD to show up somewhere with a big stack of 100s that ALL happened to be series 1988 bills, i.e., some of the last ones from before the metallic strip and microprinting were added. "oh yeah we found this in grampa's attic when he died, donchano")