In Detail - Here Are All 13 Adidas World Cup Balls - Incl. Tango, Fevernova, Teamgeist & Jabulani - Footy Headlines
The Culture of Football Classics on Twitter: "Another thing of beauty from Italia '90 - the Adidas "Etrusco Unico" ball. Following on from the Azteca of Mexico'86, it kept the Tango pattern,
Adidas Etrusco Unico - Wikipedia
Etrusco Unico is official match ball of World Cup 1990 | Football Balls Database
Adidas Etrusco Unico Football | Official Match Ball | World Cup 1990/1992 size.5 | eBay
The Legacy Of adidas World Cup Match Balls - SoccerBible
Official World Cup balls: a potted history – in pictures | Football | The Guardian