The product is a set of cased 1975 multi-assay office sterling silver napkin rings by Da-Mar Silver. These antique napkin rings feature large hallmarks and are made of solid sterling silver, showcasing a classic and elegant style. Perfect for adding a touch of sophistication to any dining table, these napkin rings are a timeless and luxurious addition to any collection. Please see photo the 4 rings weigh 260 grams. I believe these were manufactured in 1975 for the late queens silver Jubilee.