Denier can refer to:
The sextans was an Ancient Roman bronze coin produced during the Roman Republic valued at one-sixth of an as (2 unciae). The most common design for the sextans was the bust of Mercury and two pellets (indicating two unciae) on the obverse and the prow of a galley on the reverse. Earlier types depicted a scallop shell, a caduceus, or other symbols on the obverse.
The peso (Spanish: “weight” in Portuguese too) is a unit of currency that originated in Spain and is now used by several former Spanish colonies. The peso coin weighed 27 grams and was of 92 percent pure silver.
Today the term peso is sometimes used interchangeably to include the historic Spanish eight real coin (also called the Spanish dollar or colloquially “pieces of eight”), which was the main Spanish coin during colonial times. This is primarily because pesos were of similar weight and diameter to the eight real coin. However the term peso did not appear on Spanish coinage until 1864, and it is more accurate to refer to the older coinage as the eight real coin (or Spanish dollar, or “pieces of eight”).
The peseta is also a unit of currency whose name may be a diminutive of peso.
The pataca (圓) is a unit of currency which means peso in Portuguese.
The bes was an Ancient Roman bronze coin produced during the Roman Republic. The bes, valued at two-thirds of an as (8 unciae), was only produced in 126 BC by C. Cassius in combination with the dodrans, another very rare denomination which was valued at three-fourths of an as.
The semuncia (Latin half-ounce) was an ancient Roman bronze coin valued at one-twenty-fourth of an as produced during the Roman Republic. It was made during the beginning of Roman cast bronze coinage as the lowest valued denomination. The most common obverse types were a bust of Mercury or an acorn (occasionally marked with Σ), and the most common reverse types were a prow or a caduceus. It was issued until ca. 210 BC, at about the time the same time as the denarius was introduced.
See also: Roman currency.