What gift did Wilbur purchase for Dot before his death in the novel, The Wonder Boy of Whistle Stop?

Before Wilbur died, he had taken Dot to a jewelry store under the cover of getting his watch fixed. He had arranged for the sales clerk to get Dot to try on a pair of earrings to make sure she would like them before he bought them. Dot found these earrings later after Wilbur died. He had intended to give them to her as a Christmas gift.