Who is Damu Anna, and why is his story introduced in Chapter 25 of the Shri Sai Satcharitra?

Chapter 25 introduces Damu Anna as a well-to-do, wealthy bronze-smith (Kasar) from Ahmednagar who was a devoted follower at Sai's feet. His story is introduced to serve as a tangible example of Sai Baba's principles in action. The chapter first establishes that Sai wards off the misfortunes of devotees with one-pointed faith and grants their desires. Then, it presents Damu Anna's narrative as a "report that shows Sai's love for His devotees." The author promises that listening to this "novel story" will demonstrate how the "Guru-Mother is an 'Ocean of Mercy.'"