A good example of how easy it is to demonstrate non-existent differences by using low resolution photographs, lighting differences and coins of varying degrees of wear across the coins. I am sure that in the hand, or if photographed identically, the dies would be shown to be identical.
As for possible ‘missing waves’, maybe but can’t tell from the photo. It is of course possible that this feature occurs on all dates wher the ‘greasing’ of new dies prior to use use took place, I find it hard to consider this a true variety, more akin to a mint error in that the die was not properly de-greased before use.
Jerry