Can you describe the story behind the Sai Baba portrait that Kakasaheb Dixit encountered at Mirikar's house?

The portrait of Sai Baba that Kakasaheb Dixit saw had a special history. Chapter 51 explains that this photograph originally belonged to Megha, a devoted disciple of Baba who worshipped it with great love as Lord Shankar. The glass on the portrait had broken, so it was sent from Shirdi to Nagar for repairs with Balasaheb. By a remarkable coincidence, the repaired portrait was being kept, covered by a cloth, in Mirikar’s drawing room. It was as if it was waiting specifically for Dixit, who was overwhelmed with joy when Balasaheb unveiled it for him just before his journey to Shirdi was to begin.