The Peugeot UO-8 was a ten-speed bicycle

Bicycle

A bicycle, also known as a bike, pushbike or cycle, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist, or bicyclist....

 manufactured by Cycles Peugeot

Cycles Peugeot

Peugeot was a manufacturer in the French bicycle industry through the 20th century.-History:Peugeot was a French manufacturer of bicycles founded by Jean Pequignot Peugeot who, in the 19th century, made water mills...

 during the "bike boom

Bike boom

Bike boom or bicycle craze refers to several different times when, for a period of a few years, many people in many parts of Europe and North America wanted to buy and ride a bicycle. In brief, they occurred in 1819, 1868, the decade of the 1890s, and the 1970s...

" of the 1970s. It was marketed as a mid-range "racing style" cycle, and was manufactured from sometime in the early 60s until the end of 1980. The model was discontinued for the 1981 model year.

Components

Though the components changed somewhat throughout the years of production, much remained the same.

• Through all years of production, various models of Simplex
  Simplex
  In geometry, a simplex is a generalization of the notion of a triangle or tetrahedron to arbitrary dimension. Specifically, an n-simplex is an n-dimensional polytope which is the convex hull of its n + 1 vertices. For example, a 2-simplex is a triangle, a 3-simplex is a tetrahedron,...
  
   derailleurs were used.
• Mafac
  Mafac
  MAFAC, or Manufacture Arvernoise de Freins et Accessoires pour Cycles , was a French manufacturer of bicycle brakes and tool kits. MAFAC was founded in post-war France under the name "Securité", which changed to MAFAC in Fall 1947. Initially MAFAC made cantilever brakes, brake levers, and tool kits...
  
  "racer" brakes were also used throughout most of the production run.

Identification

Unlike Peugeot's higher-end PX-10, the UO-8 carries a gold "Tube Special" sticker. The serial number determines the model year of a UO-8 with the first digit indicating the year of manufacture, and the number of digits in the serial number indicating the decade. For example, the serial number "1234567" has seven digits, and begins with a one. This indicates a 1971 model.