I suspect that Lustrousstone is probably correct............ a lot of very ornate and colourful liqueur sets came out of Bohemia/Czechoslovakia in the 1920 - 30 period - many looking more like cologne and perfume bottles rather than alcohol containers. Most sets were made of either coloured glass or clear glass decorated with coloured enamels and bands of gilding etc., so this one is unusual insofar as it's clear undecorated glass.
Always possible it's a jumbo cologne - trouble is going to be finding an attribution.............these things were knocked out in profusion, and you may well never find the answer. You may have to settle for 'eastern Europe, pre 1940'.
P.S. Welcome from me also