BB sells a lot of tuxes as separates, so there may not have been any pants with it? Either way, should still be more desirable than your standard orphan since someone should be able to pick up a pair of trousers from BB and complete it.
Alden black shell LHS, 11.5 D. They're in great shape - had been lightly worn when I got them, and I've only probably worn them ten or twelve times in a couple years. Soles are still solid.
$175 shipped in the CONUS.