COLLECTOR'S PHOTOGRAPHS have a work of art status and a dedicated Certificate of Authenticity, which is a separate document with a unique number, a dry seal and a hologram. They are treated as an investment, as their price-list is progressive - the more the photograph is sold out, the more expensive each consecutive print becomes. Once the edition of a particular Collector's Photograph is finished, it becomes officially closed. The Author will never sell this image as Collector's Photograph again, and its prints will only be available on the secondary market. A Collector's Photograph cannot be an Author's Photograph at the same time. They are two separate sets of images.