Somebody may have some better info but this is what I know. It would have been made in the late 70's, prob around 1977, and would have been middle of the road Teac in its day. To say that means that it was quite good. The features present you can probably work out by looking at it.
If this deck has not had any work done to it, ie replace belts, pinch rollers etc, that will have to be done if you want a reliable deck. Decks like this can almost go on forever. I like working on Teac decks of this vintage, that is one of the reasons.
Cheers
Tony