This is the classic manual action "Trick Knife" made by Saber knives and there is an advertising name on the handle. The blade is locked closed by an interior mechanism and can only be opened by holding it tip up and pushing in on the blade, then it opens manually - a must for the collection to show off and give your friends a challenge and a laugh! Blade does not lock open. The blade is used and has been sharpened, but it is in good usable condition. To shut the knife, it must be pointed tip down and pushed shut while doing so.