Numismatic News Coin Clinic Explains Specie, Hard Money, Conservation, Tooling and Dipping

This article is based on the CoinClinic question-and-answer column published by Numismatic News on August 25, 2026.

What Counts as Specie

According to CoinClinic, specie is technically circulation-strike coinage composed of gold or silver. In practice, the term has also covered gold dust, ingots, pearls, platinum, and paper money backed by gold or silver that was meant to be available on demand when the notes were redeemed.

The column illustrates the point with an 1866 quarter eagle, which it describes as specie (image courtesy Heritage Auctions).

Hard Money and Specie

In numismatic terms, the column says, hard money and specie are interchangeable for practical purposes. Numismatically, bank notes redeemable for specie can be hard money, while those that are not are soft money.

Hard money is also a political term for campaign contributions made to a specific candidate, a political party, or an organization supporting a candidate or party. Such contributions must follow specific laws.

Shipwreck Gold and Silver

Gold coins are reasonably resistant to saltwater damage, although some restoration may become necessary. Silver coins found in saltwater are affected by chloride ions that lead to corrosion and mineralization, and the silver eventually converts into other compounds.

The column shows a Peru 8 escudo coin from a collection found in a shipwreck (image courtesy NGC).

What Conservation Involves

When a coin is sent to a third-party certification service, the accepted term for the work is conservation. It involves the safe removal of surface contaminants, such as dirt, PVC and active corrosion, to improve the coin's appearance without damaging its surface. The services will not enhance the appearance through tooling, smoothing, or disguising pitting.

Tooling and Smoothing

Tooling and smoothing are invasive alterations that may involve moving, removing, or adding metal to a coin's surfaces. The column says such efforts are typically attempted by someone hoping to raise a coin's condition and value artificially.

Properly conserved coins are recognized as having been conserved, but they tend to command a better price than coins identified as tooled or smoothed.

Dipping

A coin described as dipped has been placed in a chemical solution to improve its appearance. In some cases the aim is to remove unsightly toning; in others, the person dipping the coin hopes to improve the grade at which it can be resold.

Coin dips are sold commercially. They are diluted acid solutions meant to remove surface oxidation and tarnish. According to the column, they strip the original luster from the surface, leaving an unnatural shine that detracts from the coin's value.

Source: Numismatic News, "CoinClinic: What Counts as Specie?" (August 25, 2026).