🔎 UNIDENTIFIED Spoon bowl age

[mountainman 2]

I'm searching an what I believe is a old campsite. This spoon bowl was among the items found. Can I get a approximate time period of manufacture to help me date the site?. It's pewter with a series of long straight lines running along the entire back. Thanks mm2

 

[Cape Hunter]

Looks like it might be English 18th century pewter spoon.