This was a custom wedding ring set that was bought new in 1986 by my Mom. When these were bought they had the custom diamonds added and arrived new with the diamonds installed. I believe these are made by landstorm but not 100% sure. It not landstorm then it was made by stamper. Look at the ring sizer in the images but the small ring is is basically 8.5 and the large ring is basically 11.75 – 12. They are both 10k gold. I believe with them being a custom set makes them more rare.  If you zoom in on the images you can see the larger ring has more wear to the band. If you have any questions just left me know and I will get back to you as soon as possible.