The S-84 seatpost is a lugged beauty.  Possibly the only production lugged seatpost available.  Nitto designed a nice micro adjust two bolt design into the S-84 lug.  The post has just a little over 40mm of set back so about twice normal.  The setback may cause problems for some people, but it will solve them for many people who use Brooks saddles.  It's been lamented by Brooks owners for years that the rails on their saddles were too short and did not allow many people to get enough setback.  With the Nitto S-84 your problems are solved in style.

250 mm with a 27.2 mm outer diameter.