This is a vintage National Cycling Proficiency enamel pin badge - J. Pinches London 1950th
It was an award given to children in the UK who passed the "Cycling Proficiency Test".
The test was officially introduced in 1958 and ran until 2007, when it was discontinued.
The badge often has a safety-style pin clasp on the back and is made from metal and enamel.
It is considered a collector's item for those interested in British memorabilia.