Using Color on Circulation Coins
■ What does the term “original skin” mean on a gold coin?
According to a Professional Numismatists Guild quarterly newsletter article, “…veteran numismatists appreciate the ‘originality’ that such features impart to an old coin. Copper spots and streaks imply that a coin still has its ‘original skin,’ a term that is used widely within the coin business to describe pieces that have not been improperly cleaned and are thus natural in appearance. Typically, gold coins having original skin will show a fine layer of gentle haze in addition to whatever spotting is present. It may be that originality is an acquired taste that does not come quickly to the novice, but it is something that every buyer of gold coins should strive to understand and appreciate.”
■ Who invented colorized coins?
While the Pobjoy Mint may have developed a technique that appears similar to modern color-enhanced coins the ideas actually originated in 17th century Japan. Black ink calligraphy was applied to gold oban coins by hand.
■ Who issued the first modern colorized coin for circulation rather than as a collector commemorative?
In 2004 the Royal Canadian Mint issued a 25-cent coin for circulation. Today Australia and Canada generally lead the way with circulating color-enhanced coins, although there are a number of other countries now routinely issuing such coinage.
■ How do you grade a colorized coin that has been circulated?
According to Numismatic Conservation Services President David Camire, “In general, we grade colorized coins the same as we do non-colorized coins. There are, however, situations unique to colorized: if the colorization is off center. If it is not correctly applied to the coin, or if there are any missing pieces to the colorization.”
■ How can colorized coins be mass-produced for circulation?
The Royal Canadian Mint uses a picoseconds laser technology that adds color without having to use dyes, inks, or pigments. Other coin colorizing technologies include applying a sticker, pad printing, and digital printing. Pad printing allows a few colors, while digital printing technology allows color gradients and photorealistic details.
■ Where is the best place to exchange U.S. for foreign currency?
You can avoid paying ATM transaction costs and possibly get a better exchange rate by going to a bank or credit union prior to going on an international trip. Banks and credit unions will exchange dollars for foreign currency and the reverse following your return if you have a banking relationship with them.