Sri Swami Vishwananda has this picture of Mahavatar Babaji, presently only, in His ashram, Shree Peetha Nilaya. He has said that now we should use this picture of Babaji. Swami recently told the story of this picture in Poland at a Satsang there. See the video below.
Sri Swami Vishwananda Speaks of the above
Authentic Picture of Mahavatar Babaji