Well, according to this link, it looks like '81 was the first year for the Gyro Master and the Pro Am. Unless I'm mis-reading that. (?) Feel free to repost this link, it's not mine, I found it. http://cyclespeugeot.web.fc2.com/sanshin81.htm EDIT: Be sure to hit the "Home" button for that site, there's a lot of good stuff, including Suntour stuff.