Joined: Nov 2005
Posts: 4,075
Likes: 2,173
From: NW Ohio
Bikes: 1984 Miyata 310, 1986 Schwinn Sierra, 1987 Ross Mt. Hood, 1988 Schwinn LeTour, 1988 Trek 400T, 1981 Fuji S12-1977 Univega Grand Rally, S LTD, 1973 Sears Free Spirit 531, 197? FW Evans
My Miyata has an L serial and is definitely a 1984 model, based on the catalog pictures. Most manufacturers gear up for the coming model year in the fall, so bikes will be in the shops by the holiday shopping season.
The Avocet saddle was one of the first changes I made on my bike too.