Solid! As in solid sterling silver neck, body and bell. I couldn't believe my eyes when I opened the case. This is more than just a sax, it's a work of art. This might be the most beautiful horn I've ever seen. Wonderfully engraved bell-lip, bell, bow and neck. Yanagisawa has outdone themselves... again. In addition to its breath taking beauty, this is a player's horn, no doubt about it. Destined to be a collectors item, but meant to be played. The TW037 replaces the T-9937