I just picked this up today (craigslist) for what I think is a good deal. Is it what I think it is? Looks like a 1983 Team Miyata frame set thats been repainted a metallic blue.

I also am wondering about the Dyna Drive and how it works exactly. Does this accept the standard 68mm BB? I would like to build this frame back up and ride it. I have already checked out the "Miyata Catalogs".

Serial # on the bottom reads J895022 with a 63DD underneath.

Whats weird is it has a Specialized headset with no ball bearing and one piece of a campy BB********************?

Any help or info would be great in getting this baby back up and close to stock. Thanks.