Black leather briefcase with initials AK and brass clasp

I lost my black leather Samsonite briefcase yesterday around 3pm on Pratt Street near the Inner Harbor Visitor Center in Baltimore. It's about 16 inches long with a slightly worn surface and a brass clasp that has a small dent. The burgundy interior lining is visible when you unzip it, and there’s a tiny brass plate on the front engraved with my initials 'AK.' Inside, there's a yellow Post-it with project notes and a small family photo tucked in the pocket; this briefcase contains sentimental items and important client documents, so I really need it back.