This set of four glass coasters with sterling silver rims are marked: Sterling / STC. In very good condition, there are some flea bite dings as I have shown in my pictures and they measure 7/8 inch high and 4 inches across the rim. An additiom to any Sterling Silver and Crystal Coaster Collection. SH & Ins. will be quoted after orders placed. If you have questions please contact me and thank you for looking.