I got burned by an NOS dealer that had the 1969 B-body washer bottle. At the time, the reproductions had the lid opening the wrong direction. So I paid double for the "NOS" one. Come to find out, this "F"ing dealer was one of the first to get the correct opening reproductions.
Also, I'm seeing a lot of "NOS" diecast emblems at swap meets lately. They are just in clear plastic bags. I have a feeling they are current reproductions that have the Pentastar and correct part number cast into them.