Hi,
Based on a limited knowledge of the subject area, Jablonec nad Nisou factories would be less likely a source than some of the major pressed glass producers such as Libochovice Sklarny a.s, and C. Stoelzle und Sohne, both of which were known to produce medical glass, the latter company opening Hermannshuette, (Hermanova hut') specifically for the production of pharmaceutical glass in 1907. The non-ground finish of the base suggests a utilitarian item, usually hidden in a medicine cupboard, rather than automatic production, which in Czechoslovakia was to arrive in the mid-late 1950s, and the 1970s in the case of both factories I have suggested.
One cannot exclude the possibility of the Kavalier Glassworks, which also specialised in scientific glassware and which had some limited pressed glass capacity.
Regards,
Marcus