I have a 1966 Tanberg 3-head reel to reel, that uses 7” reels. The record head could stand to be replaced. Haven’t used it in several years but last time I did, playback was fine. Also have the schematics and manual. It really is looking for a good home.
I was just talking about my husband about this thread (it’s raining, we are under the veranda a few blocks from the lake) and even with the pleasant weather, he is not nostalgic about the reel to reel at all.
I wish you the best in finding it a good home with someone who will appreciate it and play recordings from records, Tv and what I used to do, record Kasy Kasem and American Top 40.
Your 1966 Tanberg is super cool, a spy would have used it.