Upvote:25
From the portrait, it looks to be a William I (William the Conqueror) "bonnet-type" silver penny.
However, you should also be aware that there are a lot of replica and reproduction issues of that particular coin.
As noted by @SimonB and @richardb in the comments, your coin appears to have the letters 'WRL' stamped on the obverse, which indicates that it is a replica produced by Westair Reproductions Ltd.
This replica is currently available to purchase as the Battle of Hastings Coin Pack - William I.