Simple answer, no idea.
If my counting was correct the other day, there's 155 issues of PC Zone there, and I'll have a look through the discs to see which ones I've got (if you have any interest in the discs?)
The Mean Machines aren't too tatty, and I'm missing issues 3, 14 & 21 (out of the 24), although I do have a bonus copy of Mean Machines Sega (issue 9).
The Ones are a bit rough on the spines because of how they've been stored (in an open box under a dusty bed)
Issues: Jul 93 - Sep 93, Nov 93 - Jan 94, Apr 94 - Jul 95 (22 issues)
The CVGs start off in pretty terrible condition, and the earliest few don't even have covers, so the September 88 issue is the first one I can easily identify (and that's missing the back cover
). The March 89 issue seems to be the first one I've got with both covers intact (although I felt the need at some point to helpfully write on that it was issue 88). And they carry on like that, only really the "latest" four issues that I've got are in any sort of decent condition (126, 128, 134 & 140).
I think I'm going to start sneezing again now.