Vintage Pair Silver Candle Holder

Pair of candlestick inserts, 2 3/8" in diameter across the top, with a hexagonal shape. The cylinder in which to put the candle is 1" in diameter and 1" deep. There are no markings on either insert so I don't know what the material is, but they are very shiny, no tarnish, and very heavy! Each insert weighs 88 grams or 6.7 oz. There is no embedded candle wax--they are very clean and look like they have never been used.