I was looking up some history on the bike that was handed down to me from my mom, found some cool stuff. It's a Miyata 310, and I'm pretty sure it's the 1982 model. Pictured on the bottom is a page from the 82 Miyata catalog, and on the top is a poster designed by Hiroshi Ohchi commemorating the 70th anniversary of the Miyata brand (which would have been in 1962?). Anyways, I thought it was a pretty sweet poster.