Dewalt 1/16-1/2" drill chuck by Rohm. Despite it's appearance, this chuck has been only lightly used. Damage if from dropping off my work bench and from incorrectly removing this from the Arbor it was attached to (D'oh!). Good "working" chuck if yours is a bit worn out and doesn't hold those small bits like it used to.
Outside of the dents and dings shown in the picture, there is some light rust/ corrosion (patina?) On some of the knurls. Check spins/ adjusts perfectly