First edition Star Wars action figures in display case

I lost my vintage Star Wars action figures set—first edition, from around 1977—packed in a cherry wood display case with a glass top. It includes Luke, Han, and Leia, with faded colors but unmistakable outfits; the case has a brass latch and a tiny scratch on the corner of the glass. There’s a white fabric backdrop inside the display with a small 'KENNER 1977' sticker on the bottom edge. I last saw it yesterday around 4pm outside the Buffalo Central Library on Lafayette Avenue, near the entrance by the bus stop. This set means a lot to me and is a family heirloom; I'd be incredibly grateful to get it back.