Some Guy Talkin

Here's some pictures - hopefully this helps. If high pixel large pictures would help, I can load to a website. Let me know. The numbers on the bottom bracket are M60 and 4086. According to the bhovey website, this is an '84. Also, I believe the size of the bike is 56 or 57 cm.

And, by the way, I bought this off Craigslist 5 years ago. The person I bought it from had just purchased it from a resellit shop for $200. I paid him $600, recognizing it as a beautiful bike and with the Masi name. I've watched eBay over the years but the prices jump up and down and I don't know why one bike sells for $4000 and another one just like it sells for $1500. Timing? Components? Pictures?