Personally, I don't see any overt signs of celluloid rot. I was just warning of the possibility.
On the bright side, if you do start to see, or smell (that's right, sniff those scales), you can always have them rescaled. Some of our better restorers have gotten pretty good at transferring the bolsters and logos onto new scales and it should be possible to find some kind of plastic material to match the current scales. However, I think it's highly doubtful that you are going to have to worry about this at all in the next couple of decades if you keep that razor out in the open. Given how pretty it is, that's were it belongs anyway!
Did I mention I'm still looking for one?
Enjoy your new toy.