This is the very First Edition of Light on Yoga published by Allen & Unwin Ltd., London in 1965.
Often thought to be published in 1966, the true jewel in the crown is this rare 1965 edition. I have various copies of this book in different degrees of conditions. Starting at £500 going up to £2000 for an unopened, unused copy in new condition. The quality of the photographs are quite unbelievable. The scarcity of the 1965 First editions is making them more collectable and desirable as time goes on. This slice of history is a small price to pay for this quality publication.
Please enquire on the availability and cost of your edition.