This rare vintage Star Trek TOS Engineering Insignia is a must-have for any Star Trek fan. From my own collection from the late 1960s, Made by Roddenberry's Lincoln Enterprises, it features Mr. Scott's Engineering Insignia from the original series. Just like the ones worn on The Original Series uniforms. The Insignia was made in the United States and is 1960s vintage, adding to its value. Gold foil over vinyl.  The back is fabric with embroidered details. See may other listings for the other 2 insignias.