I’ll chime in on this thread and share my experience. My cell knives are all stored in the same dark drawer with silicone packets. The drawer is lined with green felt that I believe is treated for silverware storage. The cabinet for this drawer is in a cool dark room in my basement. We run a dehumidifier in the warmer months.
These cell knives are all 50 years or so old and seem stable. I’ve read some other posts on AAPK that referred to modern knives from the eighties and nineties that have outgassed. The Kutmaster Purina knives are one example of a more unstable cell handles. I had Glennbad rehandle mine.
I agree with Ken, cell knives need airflow. Storing in plastic bags traps the corrosive gasses that destroy metals.
After all that , you can’t beat some of colors and combinations of the older celluloid knife handles. Just my opinion, Steve B.
Steve B.
Keep your edge sharp, otherwise you just can't cut it.
Looking for Carrier Cutlery and early Robeson with Elmira tang stamps.
. All my knives from the Celluloid Abalone Handled series received corrosion damage of varying degrees. At the same time, there were no changes with my only knife from the Celluloid Tortoise Shell Handled series (this series was produced a year earlier) 
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when I found out a cigar box full of knives ended up like this... 
