This is a used Yamaha YTR-6310Z professional Bb trumpet, the Bobby Shew model. It was customized by the previous owner, Buddy Childers, with a Bob Malone MB1 leadpipe and a matte brushed finish. I'm not sure that it's gold plate but the color is similar. Likely ulacquered as evidenced by some tarnish. Includes Yamaha double case.