Hallmarked to the rings: maker's initials "AO" into square punch attributed for Alexander Osborn; "Lion Passant" for English sterling silver. Marks are crisp and clear. Pictures will tell you more. Arms opens up to 3-1/4in.
Wide Weight: 0.99 troy oz. Clean, free of dents and blemishes.
Commensurate with age, the condition is very good. Rare for their maker and overall condition. Dark spots you are seeing on the photos, are reflections of a camera and other objects.