Surface treatment process of commemorative coins: the artistic symphony of light and shadow

      Commemorative coins have always had a special charm since ancient times, which can be said to be the culture of the convergence of history, but also the intelligent combination of creativity and skill. An ordinary piece of metal is transformed into a shining coin only after the surface treatment process, which is like magic. With the magic techniques of light and shadow, there are eye-catching commemorative coins.

I. Mirror treatment: smooth as a mirror
      Mirror processing is to make the surface of the coin as smooth as a mirror, reflecting a clear image. This process is a classic technique of coin production, just like putting on a gorgeous costume for the coin. The U.S. Mint once issued the "Kennedy half-dollar" commemorative coins, its mirror processing so that the head of President Kennedy in the sunlight glitter, as if he had a smile through space and time, become the memory of every collector.

Second, sandblasting treatment: rough texture
     Sandblasting treatment is through the spraying of tiny sand particles, so that the surface of the coin to form a tiny concave and convex texture, to increase its sense of touch and three-dimensional sense. The "Maple Leaf Silver Coin" launched by the Royal Canadian Mint also adopts the sandblasting process, which makes the maple leaf so exquisite that it seems to be able to feel the maple leaf flying in the air.

Electroplating Treatment: Starlight Shining
     Electroplating treatment covers the surface of the coin with a thin layer of metal color, such as gold-plated, silver-plated, copper-plated, nickel-plated and so on, which not only improves the aesthetics of the coin surface, but also enhances the collection value of the coin.

Fourth, coloring treatment: colorful
     The coloring treatment adds more color and vitality to the design of commemorative coins by integrating rich colors into them through special coating technology. The Ocean Museum once withdrew from the protection of the sea commemorative coins, on the use of coloring treatment, the colorful underwater world through the combination of color matching marvelously displayed on the commemorative coins, each commemorative coin is a delicate picture of the underwater world, so that people forget to linger!

V. Embossing treatment: three-dimensional highlighting
     Embossing is a kind of process that makes a three-dimensional effect by engraving patterns on the surface of the coins. This process not only makes the commemorative coin more beautiful, but also increases its tactile and ornamental value. There are many enterprises in the design of commemorative coins, like to add their own country's elements, such as the Statue of Liberty, the White House, etc. The factory adopts the relief treatment process, which shows every detail of the Statue of Liberty and the White House as if they were in the scene!

Six, antique copper treatment: traces of age
     Ancient copper treatment through a special chemical reaction, so that the surface of the coin presents an antique effect, giving people a sense of historical weight and vicissitudes. The Italian Rome Mint issued the "ancient Rome Colosseum" commemorative coins, the use of copper treatment process, so that the coin surface of the Colosseum pattern appears simple and solemn, as if to take us back to the sword, fierce confrontation of the ancient Roman era.

     These special surface treatment processes of the commemorative coins give the coins a different culture and value. It is these processes that make the commemorative coins show their endless charm in the symphony of light and shadow.