Granted, at first look they are exactly the same style as my post of Sept. 18th and Alan's on Sept. 17th.
Now, lets take off the topengan off all the wrongko's and imagine just the form of the wrongko, this is where I see a slight detail in the format to which they are carved, it may not have any importance at all, but look closely and you will find the left side of the wrongko when looked at from the front, appear to have less round appearance in the first three photos. And more round appearance in the last two photos.
I tried to illustrate this by drawing a straight line on the left in the photos, I may very well be wrong but I see a distinct difference in the form of the wrongko on the left side. It may be minute but then again the most insignificant difference in the world of Keris may have major implications.
Maybe they are just minor variations, or perhaps even optical illusions from being on a slight angle while being photographed, I just didn't want to ignore the difference.
