What is the story behind the Sai Baba portrait mentioned in connection with Dixit's visit to Nagar?

The story of the Sai Baba portrait is a wonderful detail in the account of Dixit's journey. Chapter 51 recounts that after Dixit and Madhavrao finalized their travel plans at Mirikar's house, Balasaheb revealed a photograph of Baba. This specific portrait was deeply cherished by Megha, a devoted disciple who worshipped it as Lord Shankar. The glass on the portrait had broken, so it was sent from Shirdi with Balasaheb to be repaired in Nagar. After the repairs, the portrait was kept covered in Mirikar's drawing room. Balasaheb, needing to stay for a horse show, then entrusted the newly repaired portrait to Madhavrao for its safe return to Shirdi.