Understanding Coin Toning

Toning might make your coins look better, but there is a chance that it may lose value despite its new sheen. Valuing a coin based on its toning presents problems for the collector.

Is the coin more valuable or not after toning?

What is coin toning?

Toning describes the light patina or discoloration that appears on the surface of a coin because of the oxygenation of the chemicals in the air. The level of the tone depends on the metal. This process may take months or years; you shouldn’t worry about it if you stored your collection properly.

Toning is a natural process, especially if the coin is decades old. It may take centuries for a coin to reach its least attractive and darkest look.

Will toning add value to your coin collection?

Several factors affect the value of a coin, but the highest value goes to coins that retained their surface appeal. If a coin is unattractive, unless very rare, no one will likely purchase them and their value low; an attractive and toned coin will be worth more.

As the cliché goes, beauty is in the eye of the beholder. Coins with a natural shine to them will always be worth more, but there is also a market for naturally toned coins. Always remember that the value of a coin will rely on its natural look, especially if it is a rare or old coin with limited mint.

What are the toned coins you will likely see?

The toning of a coin will depend on the type of metal. Older coins will display more color variation because of the less pure metal and multiple blends to produce it. Some metals also react faster and tone easier when exposed to certain environments.

1. Copper – the tone you will likely see is an orange to reddish-brown sheen to a full brown to almost black.
2. Gold – the coin will be bright yellow to orange, in some cases, the coin will look reddish.
3. Silver – the tone will be bright silver to brown or black. In some cases, you will see rainbow-style colors on the surface of the coin, which add to its value.
4. Nickel – the coin will have a silvery appearance to a grayish tone.

Toning is a natural process, but there are “coin doctors” who artificially tone a coin to increase its value. Watch out for these types of coins to avoid a scam. A coin that is artificially toned will not be as valuable as a naturally toned coin.

Find out more about coin toning and other essential tips for your coin collecting at Colonial Acres.