Have always been following your blogs for ir history. You always mentioned untill 1971 there were 2 sbc Poona trains. But found a third one. It's your Karnataka exp today's Rani chennamma like you mentioned..
3 trains existed in 1966 with third one running with train no 207/208.
Also found the footage of infamous accident of poona exp that you had mentioned in some old blog. If you didn't had mentioned about that accident I would have went looking for it .thank you