This is a gallery page containing specially selected image and media files. They have been chosen as highlights of a particular topic, but do not represent the full range of files that are available on Commons. For a wider selection of files connected with Solidus, see Category:Solidus.
A solidus (the Latin word for solid) was originally a gold coin issued by the Romans. It was introduced by Constantine I in the AD 309–10, and was used through the Byzantine Empire until the 10th century AD. The coin replaced the aureus as the main gold coin of the Roman Empire. Fractions of the solidus known as semissis (half-solidi) and tremissis (one-third solidi) were also produced.