Not Sure What Is The Coin's Price

are you looking for a coin in particular ? or a place to get the value of coins ?

You need to post a photo of the coin. Chances are it's a fantasy from a short description.

Note that with Chinese coins, there's a lot of counterfeits and you need to provide weight and photos. If it's magnetic, it's 100% not genuine.

Do you know how to differentiate between a genuine and non-genuine?

It looks like nickel not silver to me

There are several things to look out for.

Weight. Cheap fakes usually weigh much, much less than genuine silver dollars. Better fakes sometimes are given the correct weight, so correct weight is not a guarantee of authenticity, but a wrong weight is definitely a guarantee of a fake.

Magnet. Cheap fakes are often made of steel. If it sticks to a magnet, it's fake.

Edge. The fake coins pouring out of China these days are made slightly differently to genuine coins; the milled edge is applied after the coin is struck, rather than imparted by a collar die. Look for "split reeding", or the signs that they have tried to file away the evidence of the split reeding.

Design. Usually, critical design elements are missing or rendered wrongly. The fake-makers often get their dies mixed up, so that the two sides of the coin actually come from two different coins, from two different provinces.

Rarity. The probability of you, me or anyone else just happening to find an extremely rare genuine Chinese dollar being sold by someone who doesn't know what it is, is vanishingly small; you have better odds winning the lottery. Even common coins can be faked, but the super-rare patterns and trial pieces are faked much more often.