Attempted robbery during a watch sale in Los Angeles

A man meets a buyer in a public place in Los Angeles to sell a valuable watch. The buyer examines the watch, seems interested, then suddenly tries to run off with it. The scene is filmed. The seller reacts immediately, runs after him and grabs him. A scuffle breaks out. Other people intervene to subdue the thief. Los Angeles County authorities quickly arrive on the scene. The suspect is arrested. The watch was recovered. The transaction was unsuccessful, but the object was not lost.