I bought most of these issues from comic book stores, new and back issues, all around 1988 to 1992 or so. I didn't read too many of the issues that I had in the '90s, though the older issues ('70s and '80s) I likely read once. I put almost all of comic collection in storage around 1992 or so. Almost all of these issues haven't seen sunlight since '92 or so. I've always lived in a smoke-free environment.
Please note that I'm not a professional grader, nevertheless, I do take grading seriously, and I tend to grade on the more conservative side. I've tried to highlight the oldest issues with their more obvious defects, as best as I could. I generally refer to Heritage Auctions, Comic Trading Tutorial (amongst other sites) to narrow down a score. Please check the photos provided, as well as the grades listed below.
#109 VG-
Minor soiling, creasing, some foxing on the back cover,
2nd to last page has a bit of the bottom right corner torn off.
#148 FN/VF
Light bend that runs from cover to cover, no color breaks. A couple of minor spine ticks. Otherwise, a very nice looking copy.
#171 VF
Light crease near the top of the front cover with tiny color break.
#177 FN+
Spine ticks, light creasing with color breaks on the front cover, also a long indent/crease that runs horizontally along the front cover.
#178 FN+
Spine ticks, light creasing, indent on the upper right hand side of the front cover, arrival date, etc.
#212 VF/NM
#218 VF-
Minor dimpling on the front cover, otherwise, great condition.
#236 VF+
Minor crease at the middle, bottom center of the front cover. If not for that, it would be NM+ IMO.
#243 FN+
Light bend that runs from cover to cover (no color break), minor spine ticks, light ink mark (pink) on the front cover. Presents very well, nice copy otherwise.
#250 NM
#334 VF/NM
#344 VF/NM
#345 VF/NM
#347 NM+
#348 NM+
#349 VF/NM
Very minor spike ticks.
#358 NM
Super Sized Annual #21 VF
Small crease in the corner with color break, otherwise, excellent condition.
Annual #22 VF
Dimple on the front cover.
Fantastic Four vs The X-Men #3 VF+All of these issues come bagged/boarded, and this lot will be sent using a Canada Post mailing box.