I am posting these covers today afternoon. I am just posting the scans of the 11 letters before posting them at the Chennai GPO pincode: 600001, the first post office of erstwhile Madras.
Sorry for the time lapse, i could not find time to make stamp packets in time. In future, stamp requests would be processed at about a week's time after receipt of the initial request. Personal exchanges or swap could take some more time. I still working on one such cover for a friend in U.S.A