If you received it in change or got it from a bank mixed in with other coins of different dates, or it shows any wear, that's pretty much the definition of "circulated".
An uncirculated coin has never been used in commerce, and is in the same state as it was when it left the mint or was delivered to a bank from the mint. If you're lucky enough to receive a roll of identical, brand-new coins it's easy to consider them to be uncirculated. If they're evidently brand new but mixed with others you really can't be as certain. Also some banks are willing to put aside coins that they get directly from the government and let favoured customers have a go at them.
The only way to be absolutely certain that a particular coin is uncirculated is to purchase one that is sold in a special holder certifying that it's directly from the Mint. Depending on what you're buying the Mint itself may sell these directly or you may be able to get one through a dealer on the secondary market.
A uncirculated coin has not been used so it will not have any wear (or dirt) at all. You can also go on-line and find one of the many coin grading sites.
Circulated means the coin has been handled and used. Uncirculated is a coin that hasn't been spent, and is often fresh from a bank roll. Proof is a special strike technique resulting in an extra clean and shiny finish to the coin, and is made specifically for collectors.
This coin in circulated condition is valued around $3. If it is uncirculated they are worth around $30.
The grade of a circulated coin is based oc how much wear it has.
Uncirculated coins are always worth more than circulated coins. If you sell them you should ask for more money. There are many online guides you can use to get the prices.
The difference is, a circulated coin has been used. An uncirculated coin has not been used and shows no signs of wear.
A uncirculated coin has not been used so it will not have any wear (or dirt) at all. You can also go on-line and find one of the many coin grading sites.
A professional coin dealer or a professional coin grading service can determine if a coin is circulated or uncirculated. They will assess various characteristics of the coin, such as its condition, surface quality, and wear, to make this determination.
Any coin can be circulated or uncirculated depending on whether it's been spent in change or not. A coin that's received directly from the Mint, or from a bank that received it from the Mint without handing it out in change, is uncirculated. As soon as the coin has been spent, it becomes circulated. An analogy is buying a new car. The moment you drive it off the lot after paying for it, it's now a used car even if you haven't driven halfway around the block. Note: Unless you know a coin's "provenance" (a fancy term that means "where it came from") that's difficult to determine circulated versus uncirculated when a coin shows no obvious wear.
If your silver dollar shows any signs of wear anywhere on it then you can assume it is circulated. Even the slightest bit of wear, sometimes noticable only under a magnifying lens will cause your coin to be classified as circulated. The coin industry has the term "slider" for a coin that has so little wear that the casual collector would assume it is uncirculated but upon closer inspection by a wary collector it would be called "almost uncirculated". Almost uncirculated is circulated but with just the slightest bit of wear and carries a lower price tag than the uncirculated.
And uncirculated coin will not have any wear at all. The best thing to do is get a copy of the ANA Grading Standards.
If you mean a $2.50 Gold coin dated 1908 retail values for a circulated coin are $185.00-$250.00 with uncirculated at $350.00+
An uncirculated coin should have no wear whatsoever on it.
A coin which has "circulated" shows evidence of use in commerce, such as luster interruption, wear, circulation marks, dirt, etc. Conversely, an "uncirculated" coin displays no such evidence.
An uncirculated coin is bought at the time of it's release, in some sort of protective packaging. If it is out of the packaging, it loses it's status as "uncirculated" and becomes "almost uncirculated" (aUnc), ie. it has been handled. If a coin is in such good condition that you have trouble telling whether or not it has been circulated, get a magnifying glass and examine it very closely. A circulated coin will have very small scratches and nicks on the smooth surfaces. Discolouration or a darkening of the coin does not necessarily mean that it has been circulated.
Uncirculated is a description on the condition of the coin, not a certain type. A coin that is uncirculated should show no wear whatsoever. And yes, it is possible that a flying eagle cent is uncirculated ,it is also possible that it is heavily circulated.
The American Eagle Gold coins are made in Uncirculated and Proof versions. Circulated means exactly that, it has been circulated and or used. We do not use any gold coins at all in every day business. Proof coins have a highly reflective, mirror-like surface. The surface of a uncirculated coin does not.