In speaking with old tme musicians I know, the Stroh is (apparently) a patented design, and others are not true to the Stroh design. A violin with a horn is not by definition a Stroh. More detail I don't know, but anyone can make one if they hve the skills, but it won't be a Stroh. <http://strohviolin.com/> says: Our interest in phonofiddles, violinophones or strohviolins dates back to the early 1990s when discovering one of these unique instruments in a Thai/Burmese bordertown.Further research revealed that we had rediscovered a replica of an instrument, widely used in the early 20th century's recording industry - a Strohviolin - named after its German inventor and instrument designer Johannes Matthias Augustus Stroh Google can tell you more... <http://en.wikipedia.org/wiki/Stroh_violin> <L> On Oct 15, 2009, at 10:44 AM, RA Friedman wrote: > Instruments with the horn at about 9-10 o'clock were from the > acoustic age. > This one that is for sale seems like an updated idea; not authentic. > Correct?