Serenno silver represented a specific variety of silver. Dooku, a Count hailing from the planet of Serenno, fastened his cloak with a clasp crafted from this particular silver type.
The initial depiction of Serenno silver occurred in the 2002 film Star Wars: Episode II Attack of the Clones, which is part of the prequel trilogy. Its formal naming and description were introduced later, specifically within the pages of the 2017 reference work, Star Wars: The Visual Encyclopedia.