GLASSA

GLASSA Instrumentenbau was formed in 1904 by Hans Satzinger in Fürth in Bayern, Germany. It was in business until at least the early 1950's, though in later years was more known for repairs and as a dealer, not for their own manufacturing.

As mentioned in the "Weltadressbuch der Musikinstrumentenindustrie" by Paul de Wit (edition 1925/26), there was an instrument maker called Emil Glass in Fürth, at the same address as GLASSA Instrumentenbau. My theory is that Emil Glass and Hans Satzinger were in business together (GLASS-SAtzinger). However, there is no proof to this theory and the name of Emil Glass is mentioned nowhere else in any documents regarding GLASSA.