Mystery hallmarks...

by A Barker
(Kansas)

Hello.

I am having trouble identifying these hallmarks. I think the ring was made in the late 1800's and believe that the diamond may have been added later as the "star" hallmark seems to be cut in half...

The inside is hand engraved, "Hilda." It's a lovely ring, approx a 6 in size. The best I can tell is that it's never been resized. The ring has a buckle style motif.

Thank you in advance.