Hi guys,
The picture is most likely NOT photoshoped.
I have come across many boards that have this from when the keys were printed. Many times they are printed when they are on the board.
I have also seen this on a number of other boards other than Filco.
It's not that common but certaily not as uncommon as you might think. If more of us took keys off our boards we would notice this on a some keys in random locations.
I commonly happen to find them on the bottom rows keys, like; ctr, windows, and Alt. Sometimes its very, very faint and hard to see.
I have also never found any evidence that this causes a problem of any kind.
Just thought you might like to know.
-cc =)