I believe they are original GM parts. But, I think they are something that GM produced in the late 70's or 80s. Ironmike72 had a set of NOS seatbelts, which were GM replacement seatbelts...using the 6-band webbing. These shoulder belts use the 6-band webbing, too. But if you look back at the ones that Ironmike72 had for sale, the GM buttons on the buckles were lacking the "Mark of Excellence" inginia. Converesely, these have that insignia. Maybe, these shoulder belts were made earlier than the belts that Ironmike72 had were made. I'm not sure about that either. I have two NOS black should belts, one with a date code of '73, the other '72. One is missing the warning label, while the other one has it. Definately GM was lacking something in quality control along the way in regards to mine. I can't imagine why GM would not put ANY date codes on these, though. But, I would venture to guess that ones on eBay are GM, and GM used the Corvette boots A(no retaining dimple--verticle or horizontal style) since they most likely were still producing the Corvette boots at the time of producing these shoulder belts. Just my guess, though. As Arsenio Hall used to say, "Things that make you say hmmmm?"
