Silver Platinum Print (Satista)
In 1913, the Platinotype Company patented silver platinum “Satista” papers to offer an affordable alternative to platinum paper, since the precious metal was becoming scarce with the onset of World War I. Satista papers were first coated with light-sensitive silver salts and then a smaller amount of platinum and iron salts. As with platinum prints, the chemicals saturate the paper fibers, leading to a matte surface. Unlike pure platinum prints, however, which are known for their stability, the inclusion of silver particles leads to unpredictable results as the prints age. Satista papers were commercially available from 1914 until the early 1930s.