Been a long time, but on the old reel-to-reels, wasn't the A-B switch used to allow you to play the reel in reverse instead of taking the reel off and flipping it to the other side? Sort of like the auto-reverse cassette tape players. I will bet you can play it on any reel-to-reel. Seems like Sony made a nice unit back then and it may have had that feature.
I recently found some old reel-to-reel tapes I made about 40 years ago. I made them on a Wollensak T-1500 tape recorder, and the thing had a wheel to change "tracks-" Track A and Track B. I'm trying to locate a tape recorder that'll play the tapes, without any success. I found an old Wollensak machine on eBay but it lacked the A&B wheel.
Can anyone help me?