www.925-1000.com

Wow. Such a fast result to solve our mystery! I did try to search your site but that particular post was not one I opened... of course.

Anyway, thank you for your help.

We look forward to participating in the site again -- perhaps as a contributor to answer someone else's question some day. :)

https://www.925-1000.com/pics/Ximg.jpg https://www.925-1000.com/pics/Ximg.jpg We have dealt in sterling of all types for many years, but finally found a piece that stumps us. The hallmarks: O.B in a diamond * .925 in an oval * Delta (triangle) in an oval * k in a square-with-rounded-corners. It app...