G'day Brewer and many thanks for your photos. I will try to get them uploaded so everyone can see the hallmark.
But I really need to know something…
Where do you live?
UK – States – Europe – Where?
Because that will have the effect of shortening our search area.
Also where did you get the ring? If it was passed down – who from? Where did they get the item and so on. The more info you provide (assuming you know any) the better.
I showed the images to Ann and she is a whiz at UK Hallmarks and she thinks it is a fake – but needs to know more.
That doesn't mean the ring is not 18ct gold (you had it tested right?) but that the stamp just doesn't look right for UK Hallmarks.
Get back to use with info ASAP.
Dave