unsure

I was detecting in chester erlier today and came across this find in a feild and on first thoughts i thought it could be silver because of the weight, im not sure what metal it is or if it is even a coin, if anyone has any idea of what it could be please could you help me out? Thanyou

Earlyer today i was detecting on a permission in Chester and came across this, i was hoping it was siver at first because of the weight of it but i am not to sure what it is, weather it is a coin or not? If anyone can help me it would be intresting to find out :) thankyou and happy hunting!