كم ثمنها

The translation of the title: How much does it cost?

The first step should be trying to find the coin in Numista. Many pages contain pricing.

It you want help from other users post images of both sides and crop the images to little more than the coin.

 Also need the diameter. 

Lettering: IMP CAES VESPASIAN AVG P M TR P P P COS III 

You have to show the reverse to get started. However, the surface characteristics indicate, to me anyway, that it's a cast fake.