Commodore PET front label?

I've started repairing a Fat40 #commodore pet 4032, and the first thing is the 
white front panel label as you can see here
https://www.flickr.com/photos/afachat/15019861801/in/photostream/ or 
https://www.flickr.com/photos/afachat/14836282950/in/photostream/
You can barely make out the "Commodore" - almost as imprint on the label on 
the left in the second picture, or the "2" or maybe "32" from the 4032 model 
number on the right.

I couldn't find any other similar label in the PET labels page here 
http://www.6502.org/users/sjgray/computer/petlabels/

What's interesting is that the background is white, and at least the model 
number looks dark - instead of the usual white-on-dark printing.

Has anyone seen this kind of label before? Is this something "underneath" the 
real label? Or has someone glued something on top of the original? Has some 
original printing been bleached by sunlight?

Any ideas appreciated!
André


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