Haha, yeah, if you search miyata serial numbers you guys are the first thing that pops up. First through the fifth, darn near.

EDIT: So I was thinking about the SN and what year the bike is, and it occurs to me what I'm reading as a T could be a I or J with the bottom part too light to read. In that case, the bike would be an 80 or 81. Just gotta figure out model now.