We're talking books like HFH 1, ToD 1, MP 1, etc, right?
Those books are too late (actually the HFH 1 could conceivably have one). The NDS inserts only ran from about April 1971 and stopped completely in early 1973. So you'd be looking for an ASM 100 or an IM 55 for example.
I think you may be mixed up:
Marvel Premiere 1 - April, 1972
Tomb of Dracula 1 - April, 1972
Hero for Hire 1 - June, 1972
Others would include Marvel Spotlight 2 (February, 1972), Marvel Spotlight 5 (August, 1972), Marvel Feature 1 (December, 1971), Defenders 1 (August, 1972), ASM 101 (October, 1971), FF 112 (July, 1971), Amazing Adventures 11 (March, 1972), and others.
You're right the HFH 1 I caught, I don't know why but I mis-read the tomb of Dracula as "10" and not a 1 and then glossed right over the "MP 1". Must have been some kind of weird comic book tourette's like response.
I know there's a boardie with a raw marvel spotlight 5 (I think Porcupine) with one, and I have never seen one in a MP 1. With the recent increased interest in that book I wouldn't mind having one in a 9.0+ if I could find one out there.
-J.
I sold this Marvel Spotlight #5 a few years back (to a board member I believe) that had the National Diamond Sales insert:
j