Definitely not a Charles II crown.
It appears to be a gaming token made to imitate a George III Spade Guinea. These were very popular in Victorian times. Although not of great value, the tokens are quite collectable and some people try to get as many different types as possible.
Please could you advise the diameter and weight of your coin?
A genuine Spade Guinea looks like this:

It appears to be a gaming token made to imitate a George III Spade Guinea. These were very popular in Victorian times. Although not of great value, the tokens are quite collectable and some people try to get as many different types as possible.
Please could you advise the diameter and weight of your coin?
A genuine Spade Guinea looks like this:






















