Noun
spex
(colloquial, plural only) Dated form of specs (“spectacles”).
The following year X-Ray Spex played at the 20th Anniversary of Punk Festival in Blackpool minus Poly Styrene, overcoming her last-minute decision to withdraw by recruiting a replacement female singer named 'Poly Filla'. Source: Internet
"X-Ray Spex", in All Music Guide to Rock: The Definitive Guide to Rock, Pop, and Soul, 3d ed., ed. Vladimir Bogdanov, Chris Woodstra, and Stephen Thomas Erlewine (San Francisco: Backbeat). Source: Internet
Later in the year, to promote the album, X-Ray Spex embarked on their first, and only, full UK tour. Source: Internet