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About money
Finnish euro coins
The 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
The 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
The making of collector coins 7/9
Billet processing
The silver billet undergoes heavy processing. After the lining, it is taken to a ball bath, which polishes the surface. The billet is then taken to an annealing furnace and afterwards, it is usually immersed in an acid bath. After the acid bath, the billet is matte and white. However, the Peace and Security coin billet was not processed in an acid bath.
The conveyor belt takes the billets to an annealing furnace. A flame at the door of the furnace burns the gases coming from the furnace.
Next: 8. Minting
