These are probably 19th century but on no account later than the 1920s - especially with the quality of the glass and the unfinished circular pontil. I also do not believe they have anything to do with "national dress"- I see no clogs or Swiss flags (it's a duck); I think it may be a series of professions, perhaps regional costumes.
This style of hot enamel decoration was made in various countries, not just in Bohemia but also in northwest France, in Silesia, in Tirol, in Bavaria and in the Cologne area. These were made for drinking white wine.