This is a New Old Stock NOS GM part. Not a reproduction.  I recently purchased (on ebay) a NOS  Chevrolet dealer antenna kit in Chevrolet cardboard packaging that included many bezels, grommets, clips, the antenna mast, cable, etc that was a dealer shelf item back in the 69-70 timeframe. I used the correct bezel, antenna, and cable on my 69 Camaro and am selling the remaining parts individually.  This particular bezel is GM part number 3863220. I cannot guarantee fitment on a particular vehicle so please do your own research. However a simple Google search shows that #3863220 was used on a 69 Chevelle, 73-75 Vega, Monza, 69-70 Nova, 67-68 Impala, and even a 75 Pontiac Astre. I would guess there are other matches as well.  This bezel is in pristine condition and appears to have been protected in the original NOS packaging until 2020 when I purchased the kit. Condition is New. Thank you and feel free to adk any questions.