euro note euro note lowest value euro introduction euro cash form note countries sole currency legally adopting population million smallest note measuring blue colour scheme euro depict bridges arches gothic architecture 13th 14th century euro note contains complex security features invisible ink document authenticity october approximately euro circulation design series euro revealed february launched november history euro founded january currency million people europe years existence invisible currency euro cash introduced january replaced national coins countries belgian greek joined cyprus malta slovakia estonia joined january period period notes coins exchanged euro lasted months going january february official date national ceased legal tender varied member state member state earliest date germany mark officially ceased legal tender december exchange period lasted months old ceased legal tender continued accepted national central banks periods ranging years forever changes notes printed november bear signature president replaced november signature appears issues november march notes issued march bear signature president incumbent complete series euro notes new series similar current released time announce series lose legal tender status june current issues reflect expansion european_union member states cyprus depicted current notes map extend far east malta missing meet current series minimum size depiction plans redesign notes seven years issue second series preparation new production anti techniques employed new notes design theme colours identical current series bridges arches new series design euro note smallest euro note millimetres millimetres blue colour scheme bank notes depict bridges arches different historical european style euro note shows gothic era 13th 14th century original designs intended real monuments political reasons bridge art merely hypothetical examples architectural era like euro notes contains flag signature president initials said bank different languages depiction territories overseas stars flag thirteen security features listed released game february discover new security features embedded new note significant new anti measure transparent window containing shows portrait number series design euro note officially revealed february security features series lower value note security features euro note high denominations protected tilt note image change value window doorway background rainbow coloured concentric circles micro letters moving centre edges patch special printing processes euro notes unique feel glossy stripe tilt note glossy stripe showing value euro symbol appear appears light raised printing special methods printing makes ink feel raised thicker main image lettering value feel raised print run finger scratch gently ink light paper glow embedded paper appear coloured red blue green european_union flag looks green orange stars president signature turns green large stars small circles glow european map bridge value appear yellow numerous areas example inside euro greek characters need glass tiny text sharp blurred security thread security thread embedded paper hold light thread appear dark stripe word euro value seen tiny letters stripe hold light form symbol small numbers showing value surface note paper pure cotton feels crisp firm serial number series note held normal light source portrait appear portrait window note held light window transparent reveals portrait visible sides note portrait note silver coloured stripe right note reveals portrait symbol main image value number note number left corner note displays effect light moves number changes colour green deep blue security thread note held light security thread appears dark line symbol value note seen tiny white lettering stripe areas feature series tiny letters read glass letters sharp blurred circulation approximately circulation approximately worth closely monitoring circulation stock euro coins task ensure efficient smooth supply euro notes maintain integrity legal information legally central banks countries right issue seven different euro practice national central banks zone physically issue withdraw euro cash office involved cash operations tracking communities people european level hobby keeps track euro pass hands track know travel travelled aim record notes possible know details spread like travel general follow like ticket seen particular generate statistics rankings example countries tickets registered million notes worth billion
20 euro note