Portepees were obtained from a former worker at the Luneburg Co. in Kiel. This worker, who has no connections in the collecting community, stated that they are absolutely original and period produced. Upon examining the portepees under a black light, it was discovered that some of the threads in the acorn dot failed the black light test; however, as experienced collectors are aware, fluorescent type threads of this type were used prior to/during WWII, and this type of test is not 100% fool-proof. I’ve never located any portepees of this quality that were post-war produced. MINT.