In The Gift of the Magi if Jim had said to Della I'll get a lot of use out of this watch chain what would it have been an example of?

If Jim had said "I'll get a lot of use out of this watch chain" to DELLa in "The Gift of the Magi," it would have been an example of irony, as DELLa sold her hair to buy Jim a watch chain for his prized watch, while Jim sold his watch to buy combs for DELLa's beautiful hair. The statement would reveal their sacrifice and selfless love for each other.