Black leather briefcase with silver lock

I lost my Kenneth Cole Reaction black leather briefcase yesterday around 3pm outside the Palace of the Governors at the Santa Fe Plaza. It's medium-sized, about 14 by 11 inches, with a smooth surface and a couple of light scuffs. Inside there was a gray wool blazer, a USB drive, and a red notebook with 'Project Atlas' on the cover. One identifying feature is a small circular dent near the handle. If anyone finds it, I really need it back—it's not just stuff, it has sentimental value and important work items inside.