Electroplated metals with silvery-white appearance and method of making

A coin, comprising:

• a metallic core having external surfaces;
• a first electroplated layer of one of a group of copper or a copper alloy, the first electroplated layer adhered to and encasing the external surfaces of the metallic core;
• and
• a second electroplated layer of white bronze adhered to and encasing the first electroplated layer.

A coin, comprising:

• a metallic core comprising a plate of from about 500 μm to about 4,000 μm thick, having external surfaces, and comprised of one of a group of zinc or a zinc alloy;
• a first electroplated layer adhered to and encasing the external surfaces of the metallic core, the first electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 60% by weight of copper to about 100% by weight of copper;
• and
• a second electroplated layer adhered to and encasing the first electroplated layer, the second electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 70% by weight of copper and about 30% by weight of tin to about 10% by weight of copper and about 90% by weight of tin.

A coin, comprising:

• a metallic core comprising a plate of from about 500 μm to about 4,000 μm thick, having external surfaces, and comprised of one of a group of nickel or a nickel alloy;
• a first electroplated layer adhered to and encasing the external surfaces of the metallic core, the first electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 60% by weight of copper to about 100% by weight of copper;
• and
• a second electroplated layer adhered to and encasing the first electroplated layer, the second electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 70% by weight of copper and about 30% by weight of tin to about 10% by weight of copper and about 90% by weight of tin.

A coin, comprising:

• a metallic core comprising a plate of from about 500 μm to about 4,000 μm thick, having external surfaces, and comprised of one of a group of iron or an iron alloy;
• a first electroplated layer adhered to and encasing the external surfaces of the metallic core, the first electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 60% by weight of copper to about 100% by weight of copper;
• and
• a second electroplated layer adhered to and encasing the first electroplated layer, the second electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 70% by weight of copper and about 30% by weight of tin to about 10% by weight of copper and about 90% by weight of tin.

A coin, comprising:

• a metallic core comprising a plate of from about 500 μm to about 4,000 μm thick, having external surfaces, and comprised of one of a group of copper or a copper alloy;
• a first electroplated layer adhered to and encasing the external surfaces of the metallic core, the first electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 60% by weight of copper to about 100% by weight of copper;
• and
• a second electroplated layer adhered to and encasing the first electroplated layer, the second electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 70% by weight of copper and about 30% by weight of tin to about 10% by weight of copper and about 90% by weight of tin.

A coin, comprising:

• a metallic core comprising a plate of from about 500 μm to about 4,000 μm thick, having external surfaces, and comprised of one of a group of aluminum or an aluminum alloy;
• a first electroplated layer adhered to and encasing the external surfaces of the metallic core, the first electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 60% by weight of copper to about 100% by weight of copper;
• and
• a second electroplated layer adhered to and encasing the first electroplated layer, the second electroplated layer of from about 4 μm to about 25 μm in thickness and comprising from about 70% by weight of copper and about 30% by weight of tin to about 10% by weight of copper and about 90% by weight of tin.

A method for making a coin, the method comprising the steps of:

• providing a metallic core having external surfaces;
• providing a plating bath comprising copper ions and tin ions;
• and
• electroplating a layer onto and encasing the metallic core using the plating bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core having external surfaces;
• providing a first bath comprising copper ions;
• providing a second bath comprising copper ions and tin ions;
• electroplating a first layer onto and encasing the metallic core using the first bath;
• and
• electroplating a second layer onto and encasing the first layer using the second bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of zinc or zinc alloy;
• providing a plating bath comprising copper ions and tin ions;
• and
• electroplating a layer onto and encasing the metallic core using the plating bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of nickel or nickel alloy;
• providing a plating bath comprising copper ions and tin ions;
• and
• electroplating a layer onto and encasing the metallic core using the plating bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of iron or iron alloy;
• providing a plating bath comprising copper ions and tin ions;
• and
• electroplating a layer onto and encasing the metallic core using the plating bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of copper or copper alloy;
• providing a plating bath comprising copper ions and tin ions;
• and
• electroplating a layer onto and encasing the metallic core using the plating bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of aluminum or aluminum alloy;
• providing a plating bath comprising copper ions and tin ions;
• and
• electroplating a layer onto and encasing the metallic core using the plating bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of zinc or zinc alloy;
• providing a first bath comprising copper ions;
• providing a second bath comprising copper and tin ions;
• electroplating a first layer onto and encasing the metallic core using the first bath;
• and
• electroplating a second layer onto and encasing the first layer using the second bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of nickel or nickel alloy;
• providing a first bath comprising copper ions;
• providing a second bath comprising copper and tin ions;
• electroplating a first layer onto and encasing the metallic core using the first bath;
• and
• electroplating a second layer onto and encasing the first layer using the second bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of iron or iron alloy;
• providing a first bath comprising copper ions;
• providing a second bath comprising copper and tin ions;
• electroplating a first layer onto and encasing the metallic core using the first bath;
• and
• electroplating a second layer onto and encasing the first layer using the second bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of copper or copper alloy;
• providing a first bath comprising copper ions;
• providing a second bath comprising copper and tin ions;
• electroplating a first layer onto and encasing the metallic core using the first bath;
• and
• electroplating a second layer onto and encasing the first layer using the second bath.

A method for making a coin, the method comprising the steps of:

• providing a metallic core in the form of a plate having external surfaces, the metallic core of a thickness from about 500 μm to about 4,000 μm and composed of one of the group of aluminum or aluminum alloy;
• providing a first bath comprising copper ions;
• providing a second bath comprising copper and tin ions;
• electroplating a first layer onto and encasing the metallic core using the first bath;
• and
• electroplating a second layer onto and encasing the first layer using the second bath.