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.
i don t know anything about these things other than what s on that page the real answer to the question is that your coin is worth whatever you can get someone to pay you for it even in the absence of someone taking advantage of you this number can vary significantlyt has nothing much to do with the age of the coin a the presence or lack of a mint mark can substantially change the value of a coin because it is scarce b a particular variety can be scarce as well 2 condition the nicer condition a coin is in the more it is worth