Do you have any photos of the blade before you started the clean-up? Gassing, or cell rot, typically causes pitting on the blade contained within the scales but not the uncovered part - so the pitting has a defined upper edge. If you blade was not like this the you can probably discount cell rot. I’ve never seen scales like this - which is not to say they were not designed that way, but if you have any doubts it definitely best to get rid of them and make sure they don’t come into contact with any other celluloid razors you may have.