Yeah, "The Night Gwen Stacy Died". The Amazing Spider-Man #121
First edition, maybe opened it once...
Quickly said "meh, too sad", and pitched it in the trash the next week.
Hey! I was a kid, what the hell did I know??
I have no idea what it's worth now, but someone claimed it was probably about 4500 if in mint condition. But this was a first run, I mean, I got it right out of the comic book shop the day it came out. So I dunno if that matters any or not.