Here's a blast from the past with some vibe! Because of the amber bumped, we believe this is a late '60s Hamilton "Fast Action" Capo. It still works on most necks, but on an especially chunky or especially thin neck, it might not be a great choice. More than anything, this capo is a cool piece of '60s Americana that would be a fun Easter Egg in the pocket of a vintage guitar case.
This Hamilton Capo shows some scratches and signs of wear, but it still functions on most guitar necks. The hinge is a little loose, and the bumper is worn and tarnished from use. The Fast Action capo was a groundbreaking design in its heyday, and it's still made to this day!