The tidal range is the vertical difference between the high tide and the succeeding low tide. Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.
Coin toning can intrinsically increase or decrease the value of coins. Natural coin toning can be quite beautiful. It can also be outrageously ugly. And because beauty is often times in the eye of the beholder, placing a value on a coin due to its toning can present problems.
Quick Answer. A numismatist is a person who collects coins. Coin collectors value a coin based primarily on its date, condition and place of origin. Coins that contain production errors also carry a high value for collectors. Collectors may value a coin from between a couple cents to over $10,000. Rare coins that were produced in small numbers are generally worth more than coins intended exclusively for circulation. Older coins are worth more than newer coins. Coin collectors grade coin condition on a scale, with the most valuable coins rated as uncirculated. Coins that have been worn down or damaged command a lower price.