Continuity mistake: When Dink tosses Paladin's business card back to him while Paladin's leaning back in a chair, it lands on his stomach and falls down almost to his waist. After Dink speaks, when they cut back to Paladin, the card is up by his heart. (00:13:50)
Have Gun - Will Travel (1957)
1 mistake in The Black Hankerchief - chronological order
Starring: Richard Boone, Kam Tong
Genres: Western
Paladin: I don't think you got a very good look at this gun while you had it. The balance is perfect. This trigger responds to a pressure of one ounce. If you look carefully in the barrel you'll see the lines of the rifling. It's a rarity in a hand weapon. This gun was handcrafted to my specifications and I rarely draw it unless I mean to use it. Would you care for a demonstration?
Trivia: According to Ancestry.com, Have Gun, Will Travel star Richard Boone was descended from George Boone (1738-1820), a brother of famed American frontiersman Daniel Boone.