Is Case "Imitation Pearl" Celluloid?

[TwoFlowersLuggage]

As the title says, is the Case "Imitation Pearl", as used on the 9201 pen knives celluloid, or something else?

[tongueriver]

Someone here assuredly knows more than I, but, with the exception of those ill-fated German knives, I don't think anyone has used celluloid since the 1950s. ???

[Mumbleypeg]

Not sure what it is but pretty sure it isn't celluloid. Unlike celluloid it seems to be stable, other than a little shrinkage over time. I don't recall seeing any that out gassed or disintegrated like celluloid.

Ken

[TwoFlowersLuggage]

Thanks! I really like these little 9201 pens and now I don't have to be afraid of them!

I also have some knives from various brands that have cracked ice handles (Ka-Bar, Kutmaster, Camillus, Case & Imperial). I need to figure out whether they are acrylic or celluloid. Most of them are much newer than the 1950s, so I'm hopeful they are safe as well. I've seen some "cracked ice" called celluloid, but I have also seen it called POM (Polyoxymethylene - same as Delrin) - sometimes for the same brand and models. But this part of my quest doesn't belong in the Case forum.

[knifeaholic]

Some of Case's imitation pearl is celluloid, but only on the older knives. The Tested to XX era imitation pearl known as "cracked ice" was celluloid. It has yellowish tint and striations in the material.

The knife posted has the later imitation pearl that has an even white color - this material is not celluloid. It won't outgas but it WILL shrink. Used from late XX til about 1975-76.

Mid to late 1976, Case went to a new white "cracked ice" material that also will shrink (even more aggressively).

Later early 80's - they went to an acrylic imitation pearl attached with no pins.

[TwoFlowersLuggage]

Thanks Steve!