Campagnolo C-Record aero seatpost, 27.2mm
Campy had so many amazing generations of components, each with their own notable highlights, but the C-Record era brought elegant rounded shapes to much of the lineup, and this seatpost was absolutely one of the strongest designs, with a minimal main section and rounded/beveled aero shape. It's really just a beautiful piece of engineering, not to mention a great addition to a bike. Very nice shape, although there are some scrapes on one side, likely from a difficult install/removal. 27.2mm diameter.