Short version: Chaosium did a Kickstarter last year to reprint some classic Call of Cthulhu RPG supplements from the 1980s. The HPL Historical Society has gone out and done props for all of them: “These props go with the supplements reprinted as part of the Call of Cthulhu Classic set, which includes the original Call of Cthulhu Rulebook, The Cthulhu Companion, Fragments of Fear, The Asylum & Other Tales, Trail of Tsathoggua, and Shadows of Yog-Sothoth.”
The CoC Classic Gamer Prop Set will set you back a cool hundred bucks, and I don’t have the space for the props in question – but the HPLHS is the gold standard when it comes to game props. They just get it. If you’re a CoC gamer, you’ll get your money’s worth out of this deal.