January 1985 6309-7040. Only the insert and crystal (correct replacement) aren't original.
Been fully stripped, serviced and pressure tested by The Seiko Yoda. The DAL1BP arrived from Seiya at the same time - this is as close to the original strap the watch had when new as you can get.
Duncan reports it's running at around +2spd.
There's just something about these that keeps me coming back to them.
http://i1122.photobucket.com/albums/...psfjpqxx0t.jpg