I think that's my bike, I think trek only had bikes without the color wrapped seat tube in 83 to 84. Looks like a 610/620/600, my bike, in my color, even my size. You were clever enough to switch out most of the components so I wouldn't notice.

Wait, I take that back, yours seems to have brazed on cable guides, mine are clamp on. Maybe not an 1984 600 series then.