Marantz ST7 Tuner- Any thoughts about this tuner?

I just bought this tuner along with a bunch of other gear and can not find any information about it. It has a black faceplate, with a white dial and a tuning scope. Any help on age, approx. worth, and was it a very good tuner. THANKS

Click on this link for information on the Marantz ST7

It's worth a little under a thousand bucks if its in decent shape, primarily because of its value as a collectible. As a tuner, they weren't really all that great, and many better tuners are out there. But hey,if you got a good deal on it, it would be a snap to sell it and pick up a decent tuner.
Yes, I just bought a mint one on Ebay for $935