I resized the pictures that were in fair or better focus.




It would be better to have pictures in better focus but I am of the opinion that the coin is a numismatic forgery.
The edge, although out of focus, appears to show a raised center - a seam. The faces show a roughness of the fields and a lack of sharp detail that also indicates forgery.
I would weigh the coin and then determine the density of the metal. Weight divided by volume is density. The best way to calculate the volume of a coin is to determine the weight of water it displaces. So weigh the coin in air and then again in water suspended by a very fine thread. The loss of weight is the displacement.
Divide the weight of the coin by the weight loss in water and you have the density.
The density of a genuine 8R will be 10.31 and the weight should be about 26.9 grams.