No, a 1210 is just the black version of the SL-1200mk2
$650 is a good price if it has no issues (anything on a 1200 series is easy to fix and tons of aftermarket parts), my mk2 holds speed rock solid, there is no "dancing". If I sold my 1200mk2, I would want $800 but buyer would also get a DJ flight case for it and a extra dustcover. There is a reason these are some of the most highly regarded TT's ever made
I like Thorens to, had a shit load of them but my fave was a TD-320mkII. Wish I never sold it but the Technics 1200mk2 is just as good if not better, especially for reliability plus you don't have to mess with a belt. I have never been a fan of belt drives compared to DD's