JK Keilwerth Alto sax neck from the SX-90 SX-90R series. This is in original gold lacquer and in very good condition. It is marked 5 on the tenon. I’m not sure what these markings mean. I’ve seen them on some but not all JK necks. They always play quite well and this one certainly does. […]

alto • keilwerth • neck • series • stamped • sx-90 • sx-90r • tenon