BasketThe history of money
The history of Finnish money
Numismatic vocabulary
About a Coin Exhibition in Science Centre Heureka
The tale of a coin
Junior coin collector’s knowledge base
The making of money The making of circulation coins
The making of collector coins
Stringent quality control
The quality of circulation coins is monitored at several stages of the process. Since 2000, circulation coin production at The Mint of Finland has been certified to the ISO 9001- quality management system. Superior quality is a prime competitive asset for the mint.
In addition to manual and visual quality control, coins are also subjected to laboratory testing using e.g. magnifying cameras. Stress testing equipment reveals the strength of bimetal coins.
Flawed or defective coins are removed from production and recycled for raw material.
The device tests the magnetic force of the coins. Slot machines identify coins based on qualities such as conductivity and magnetism.
Chief Quality Control Officer Miia Arkiomaa measures the strength required for separating the parts of a euro coin consisting of two kinds of metals.
The quality of circulation coins is monitored at several stages of the process. Paavo-Pekka Männikkö inspects a coin by using a loupe. A simple perforated plate is used to test the coin: it must pass through one aperture but not another, while the third aperture tests the diameter of the coin.
The device on the right is a brand-new quality control laboratory testing device.
