It has a matching serial number on the double socket neck. Comes with the original case (in excellent condition), original brass end plug, original strap, original mouthpiece, ligature and lyre. It is an excellent player and has an amazing sound. White King Zephyr Eb Alto Saxophone" is in sale since Thursday, July 29, 2021.This item is in the category "Musical Instruments & Gear\Wind & Woodwind\Band & Orchestral\Saxophones". The seller is "duwanna" and is located in Arlington, Texas. This item can be shipped to United States.