here we are talking about two different horns. One of them - cheap Buescher stencil Silvertone, good student horn and another one professional model built by Kohlert or one of the Keilwerth factories. Very well pro built horn with rolled tone holes, built the same quality way like Conn 10M, Buescher Big B or even french SML, Buffet, Selmer. I played few of them, great key action and great tone...!!! Undervaluated and unknown pro horn !