As Photo London Digital draws to a close this weekend, make sure to catch the unique pieces on view at the fair.

Akio Nagasawa Gallery presents a hand-signed collage of prints by the Japanese master Daido Moriyama. At Catherine Edelman Gallery, another Japanese artist, Michael Koerner explores his family history and genetics - severely impacted by the exposure to radiation of the atomic bomb dropped on Nagasaki - through small tintypes, using photographic chemistry to assimilate the bursts and biochemical fallout from the atom bomb.

Encounter Contemporary presents a postcard collage by Swiss artist Nicholas Feldmeyer while Flowers Gallery exhibits Julie Cockburn's iconic work, which transforms found photographs into palimpsests, altering their original images with her own imaginati

Unique works by great masters can be found at Johannes Faber, presenting a hand-signed photo by Robert Mapplethorpe; Purdy Hicks, showing a daguerreotype by Takashi Arai; SmithDavidson, presenting a polaroid by Mark Lagrange; Sprüth Magers, showing a unique piece from Bernd and Hilla Becher's “typologies" - a series of photographic images of industrial buildings and structures for which the artist duo is best known.

MMX Gallery presents a unique work by experimental British photographer Michael Jackson and New York City gallery Miyako Yoshinaga presents work from Emi Anrakuji's “e-hagaki” series, where she superimposes elusive and shadowy images of herself over picture postcards depicting miniature landscapes and cityscapes from around the world.

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