Hallmark

[shellsours67]

Help identify the hallmark, it's a capital R inside a "D"? The other stamp is an 8 but the ring size is close to a 6 (I'm guessing) no gold stamp or silver so I don't know what the metal is either,so I don't think it's the size

[sigs70]

Check out site below for maker marks, good luk...

Sigs70

http://www.langantiques.com

[shellsours67]

I did I couldn’t find it