No sir. Pune Miraj express was introduced sometime between 1972-74. Pune-Miraj was on MG until April 1971. It was converted to BG and opened in April/May 1971. At the time of opening, it only had 3 trains. 2 passengers and 1 mail (extension of Bombay-Pune mail).
The mail was replaced with Mahalakshmi express by end of 1971. A new Pune-Miraj express as introduced later between 1972-74, which was extended to Bombay in 1977 and renamed as Sahyadri express.