Component mix is similar to 1983. Contrasting head tubes came in 1984 and head badge is similar to 1984 design. 1985 had unique decal style. Best candidate with current information is a 1984 model. Try checking the component date codes against the info on the components page of the Vintage -Trek website. If it's a 1984 model, component codes will typically be from late 1983-early 1984.