1966 & 1967 Die Gouge In Same Spot?

I was looking at your coins and wondering if something was going on those years. These were struck at three different mints those years. ( no mint marks on the 1965-167 cents from Philly-Denver-San Francisco) When I looked at the PCGS coinfacts page, I noticed a lot of die clashes happened those years. A lot of die polishing. When you look at the '1's on the dates note how there are thinner, the coat line on the right side is very weak from all the over polishing. So the lines that you are seeing are probably a die gouge from the edge of rotary disk that caused the lines you are seeing. The dies were great when they started, but when down hill fast from the abrasion they received. Even the reverses suffered more than the obverses. So an incuse line on that area will leave a raised area on the coin. That is what you are seeing on your coins. I see no premium for these. Looks like I have enough images and information to create a new topic sometime in the future on these years coins. Note the Obverse and Reverse of this coin:
http://images.PCGS.com/CoinFacts/33...6513_max.jpg
Note how fresh the obverse is? Then note the reverse for this coin. Note how much abrasion it has on it?

This is a great response Coop! Thank you very much, I was really wondering what would cause a gouge like that across multiple years.