NOTE: Roger Haworth: The clear mug is basically the same except the pillars are swirled. I haven't found this version in the catalogs, but assume it's also McKee. Catalog cut is from the mid-1890s (1894?) catalog but the chocolate has to be 1902-3.
NOTE: Sid Lethbridge: It is also shown in the 1902 National Export catalog as being made at their McKee Works.
NOTE: Bing Hilton - chocolate glass items would have been made after March, 1902.