Google seems to have been doing a bit of testing in their Adsense layout and branding. This is probably the most subdued one that I have seen and I wanted to provide a snapshot of it.
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I didn’t alter the image. That washed out, greyscale ‘Ads by Google” is what displayed on the page. Notice that the block also fails to display the “advertise on this site”. Yes, the site that I clipped this from is enrolled.