Supernatural Season 10 Original Screen Used Big Knife Movie Prop. In good screen used condition. This is a big knife screen used in the series of Supernatural from Season 10 Epsiode 5 "The Musical".The piece is around 50cm (20 inches) big. Check out my other items. Be sure to add me to your favorites list. Supernatural Season 10 Original Screen Used Big Knife Movie Prop" is in sale since Friday, February 26, 2021. This item is in the category "Entertainment Memorabilia\Movie Memorabilia\Props\Originals". The seller is "mr-jvoorhees" and is located in Geleen. This item can be shipped worldwide.