Hi, I am trying to find information about this solid single disc stem crystal goblet. My main interest is how the platinum and glass trailed pattern design have been applied during the making. There are slight variation within the platinum pattern around the perimeter rim area of the glass. Due to the different variations and designs during my research, I am finding it difficult to place this to any one manufacturer. Could this goblet be a one-off, as a commemorative piece or does this goblet come as a set and can be used for drinking out of? Too be honest, I have not a clue, as this is the first one I have ever owned. The overall height is 17.2cm, base dia. 5.7cm . The base is concaved, descending in two curved steps as it meets the pontil area. The polished convex pontil measures 1.7cm dia. Any help is appreciated.