Gold hallmarks from 1897 on a gold medal. A hallmark is an official mark made on an item of precious metal to guarantee the quality of the metal. In the past this was done by guilds, and later by assay offices. Hallmarks usually indicate the quality, who made the item, and the year of marking. The mark partially seen at left is that of the maker (JAR), James Andrew Restall (see H100/1072). The three marks at centre are (from left) the quality mark (crown and carat number, here 18-carat gold); the assay office mark (here an anchor mark for the UK city of Birmingham); and the year mark (x) for the year 1897.
Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library.
Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.
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If you're not happy with a purchase that you made on FineArtAmerica.com, for any reason, you can return it to us within 30 days of the order date. As soon as it arrives, we'll issue a full refund for the entire purchase price. Please note - Fine Art America does not reimburse the outgoing or return shipping charges unless the return is due to a defect in quality.