'In the case of tickets issued to senior citizens on concession, during journey the concerned passengers are instructed to carry some documentary proof showing their age or date of birth, issued by any Government Institution/Agency/Local Body. like Identity card, Driving License, Passport, Educational certificate, certificate from Local Bodies like Panchayat/Corporation/Municipality, or any other authentic and recognised document. This documentary proof of age should be produced if demanded by some Railway official during the journey'
..Source:www.indianrail.gov.in