This news site credits it to a "gundampilotspaz" on Flickr. The account does not seem to exist, but doing some cross-site searches indicates that someone by that name took some pictures of Borg models at the Star Trek: The Experience attraction at the Las Vegas Hilton in Paradise, Nevada. It would probably be associated with the "The Borg Invasion 4-D" display. Unfortunately, it closed in 2008. Here are a few of the images from various sources so you can judge if they look like they would match:
After Xantec mentioned that it looked less like a hole than an implant, I took another look at the images, particularly the third one from this review, and I think it's the left-most (audience left, not stage left) of the three in the display case (apparently along the queue), with the black patch and the silverish circular bit over its eye. Here are cropped sections side by side.
Here is a video of the movie: