Quote Originally Posted by AlanII View Post
Celluloid is sometimes not stable and degrades emitting gases that corrode steel. Mottled scales (like yours) seem prone to it. If you look at the patches of rust on the blade they look to correspond to some of the darker patches on the scales when the razor is shut, hence the suspicion. Do a search on 'cell-rot' and there are many threads discussing it, some are very good.
Thank you very much. =D