Thread: What is happening here?

Please have a look at the pictures. i bought this razor new couple of years ago. Never used it, has been living in a dry drawer in a dry room.
As you can see one side of the blade is rusty, handle on same side is not. Other side only minimal rust. Took it out for inspection about half a year ago when the blade was still pristine. Is this celluloid rot? Why only on one side? The razor has been stored in the plastic thingy.