I was around at tha time the record came out, and remember only the white cream-coloured issue with block letters, that was also picked up by Jay-Gee fro national distribution, and the yellow and green "checkerboard" issue. i don't remember seeing the blue issue until the late 1970s or early 1980s. That doesn't mean that it's a boot, but I don't remember Chex using blue on other issues, and would be wary of pressings with no stamps, and only "Chex" scratched on.,