Hammett's collection features some amazing posters, including art for Frankenstein (1931), Island of Lost Souls (1932) Dracula's Daughter (1936), I Walked with a Zombie (1943), and dozens of other films. The exhibit organizes the posters by film, era, genre, or star so that groupings have a common theme of some sort, with the major monsters and stars getting special areas that focus on them. The displays also include some three dimensional items like props, costumes, and several of Hammett's custom horror themed guitars. Particularly fun are the excellent wax figures of Bela Lugosi and Boris Karloff wearing costumes from their films. The exhibit stages a number of items so visitors can take selfies with them, which makes the experience even more fun.
If you're able to visit Toronto in the near future, the Kirk Hammett exhibit is absolutely worth the trip and the extra admission price. The exhibit will remain at the ROM until January 5, 2020. It will then move to the Columbia Museum of Art in South Carolina and be available there from February 15 until May 17, 2020. If you can't get to the exhibit in person there's a gorgeous photo book of the collection available on Amazon for $20.97, which is a great deal compared to the amount you'd pay for it at one of the museum shops.