This is a vintage poster advertising a magic show by a performer named Kellar. The poster features a dramatic illustration of Kellar performing a levitation trick. He is depicted in a dark suit, holding a wand, and gesturing towards a box suspended in mid-air. A ghostly figure is emerging from the box, seemingly floating upwards. The background is a dark blue with sparkling stars, creating a mystical atmosphere. The poster is bordered by a light yellow frame. At the top, the text reads "Kellar's Startling Wonder" in bold, red lettering. Below the illustration, the text reads "The Cassadaga Propaganda." There is a circular stamp in the bottom left corner with some text and numbers. The poster has a slightly aged and worn appearance, adding to its vintage charm.