Would that be Amati? Usually it has been Keilwerth who made horns, horn bodies and parts for other companies to "stencil". I bought a Frankenstein H. Couf sax in 1978 that the salesman (who had years of experience in volume band instrument sales), claimed that he couldn't determine the model of, but it was closest to an "EX80", although he didn't mention the name Keilwerth in the conversation. Keilwerth didn't sell saxophones under their own name in the U.S. in that day and time. W.T Armstrong sold the Keilwerth sax line here, though, under the stencil name of H.(erbert) Couf. The one I bought I have determined to actually have been a Keilwerth Royalist 1 with all brass finish but otherwise the only discernable difference was the distinctive straight rod for a bell brace, and the bell simply said H. Couf. On the back, by the strap ring it said "Made for W.T. Armstrong by the Keilwerth Musical Instrument Factory in W. Germany" or something very similar to that. The Couf bell with no model name designation was puzzling but it really was a close match to an EX80. Let me tell you, I have toured in Paris and 3 other French cities, 3 major Canadian western province cities, played in Las Vegas, on television, I toured all the major U.S. cities in the #2 U.S. showband out of Mus-Art Corp., Studio City, CA, and I always received great respect and admiration from the other musicians I have worked with. Notwithstanding the absence of the haunting and unmatchable sound that the Selmer line is capable of producing, that EX80 was one of the best saxophones I have ever played, & without the problematic rolled toneholes of the SX line. I kicked a lot of serious butt with that horn (Couf Artist 5* mthpc). Performing or recording, a formidable axe in my hands. I personally owned a Mark VI tenor that was a miserable lemon and dumped it.