The Technium line is in the 1986 Raleigh USA catalog on the Headbadge website.
http://www.jaysmarine.com/TH_raleigh_cat_usa86.html

My first vintage find was a two-fer-- a Technium 460 and Batuvus Champion for a total price of $30. I like the color of yours--mine is silver with lavender headtube, kinda blah.