Vintage NASA prints, processed by NASA’s photographic laboratories shortly after the date of the scene depicted. As contemporary, original prints of pictures taken by astronaut-photographers such as Neil Armstrong, they are very rare and difficult to find, especially in good condition. Generally speaking, vintage NASA photographs were printed on fibre-based photographic paper, 20 x 25 cm (8 x 10 in). Most are printed on “A Kodak Paper”, a watermark which changed in 1972. Unless otherwise stated, all photographs are glossy prints on paper.