Cordials with a twisted stem like your green one were made to special order right until the 1950s in Belgium; I do not know which factory (could be Chênée) but I know that the oldest Amsterdam liqueur bar used these in clear with an etched logo - until the factory went under and they could not get new supplies. These glasses still turn up in the antiques trade but they are getting quite rare.
If it one of the Belgians, then the foot should be made in a clapper, i.e. smooth and flat, no pontil marks or kickups.