How vintage? In the mid to late nineties there were longer seatposts. Eighties is much more difficult to find anything longer than 250 mm...
70s/80s, something that would be in keeping with a Campag aero post. Selcof did a copy I think which may be longer than 220? Something that would be match up with Cinelli 1A and Criterium bars.
As SeƱor_Bear says, the Nitto S65 is lovely, although I have a Nitto S65 with Nitto Stem/Bars on another bike; so would like to consider alternatives before going down this route.
70s/80s, something that would be in keeping with a Campag aero post. Selcof did a copy I think which may be longer than 220? Something that would be match up with Cinelli 1A and Criterium bars.
As SeƱor_Bear says, the Nitto S65 is lovely, although I have a Nitto S65 with Nitto Stem/Bars on another bike; so would like to consider alternatives before going down this route.