Della cuts off her long, beautiful hair and sells it in order to buy a watch chain for her husband's prized pocket watch. Jim, her husband, sells his pocket watch to buy an ornate brush for his wife, Della. Which type of irony is this

This is an example of situational irony, where the outcome is the opposite of what is expected or intended. In this case, both Della and Jim end up giving up their most prized possessions in order to buy gifts for each other that are now useless to them.