I was looking for the same thing an my local used record store had a Yamaha T-2 "checked out" that I ended up buying for less that a 1/3 of the price ask. People aren't looking to buy tuners in general. A week later I bought a T-7 on CL not because I needed it but it was so cheap. Who doesn't need a backup for any vintage equipment.
Lemm know if you want to part with that T-2. I am in search of one!
I am looking for a cosmetically perfect one.
As far as what to buy, TIC is one place that should be looked at.There's a ton of info and it sometimes makes the process more difficult. I'm thinking that you might want to narrow things down by deciding on either digital or analog tuning..and if analog, whether tubes or solid state. Then you can at least narrow down the vintage to search from. http://www.fmtunerinfo.com/index.html