J McKim

That's a good point. They do stack nicely with the new design...

Another question for you experts -- I keep my comics in a cooled room in a finished basement, right now I'm averaging 65-70 degrees F, and the relative humidity is 50-55. Does that sound safe to you (I thought it was), or should I invest in a dehumidifier to bring down the humidity a little bit? I'm asking because optimal RH seems to vary a great deal per some experts (some even say as low at 30 to 35%)? Thanks for your help!

Thank you guys for the input! I think I'll just take my chances with the books being upright. I don't really want to spend more money figuring out how to store them sideways at this point. I don't plan on worrying about the effect of upright storage in thousands of years anyway

Hello, long-time lurker, first time poster! I have been collecting key graded comics for close to two years now. I keep them in a constant acceptable temperature/humidity settings (most all are in CGC-approved HotFlips boxes upright). I definitely understand how unacceptable ranges of temp/humdity could damage them. It wasn't until surfing around on here, I encountered recommendations to store with the spine/staples down. Some individuals said I guess the pressure/gravity could pull the staples out over time. I'm curious if anyone actually has verified evidence of this? Sorry if it's been answered elsewhere (I couldn't find anything exactly). I don't really understand how storing upright could damage books, when most would've been upright for decades anyway (given they're older issues in a bag/board situation), and also in CGC inner wells the books are held pretty tightly in there (I guess mine are all the newer style CGC cases). Any thoughts on this? Thank you for your time!