Never part with the ones you've been published in!
I high graded through mine. Same with quilt magazines. Just too many of them and need to thin the herd. I'd pull out a stack of one and 10-20% had to go. I'd just unload the least desirable.
I kept anything with Hallowe'en. I admit when I saw your photo with the Hallowe'en issue on top it caught my eye. I don't have that one.
I recovered my composure as quickly as possible.