...indicate that these pieces may have been manufactured over a century ago, in the late 1800s. WWI greatly interrupted trade in this region, did it not? And after WWI, plastics started to gain ascendency, especially German plastics designed to imitate amber.

The 2 large tubes, the three large oval mouthpieces are what I see as pieces originally made for pipes.

The likelihood of their being pressed amber is high...but pressed amber is still amber.