"The original 1947 Super Speed has the same center bar as the Ranger Tech"
That is interesting. I was under the impression that it was called a Super Speed because of the notched center bar which, in conjunction with the dispenser made blade changing Super Fast.
So to be clear the 47 SS was introduced in July of 1947 and previously there was a "no notch" version?
My boxed 47 is notched.
So what do we call an early 47 razor? Super Speed or Ranger Tech/Milord.
The early 47 razor is a Super Speed.
The first two changes from the Ranger style to Super Speed style,
were the handle and the base plate.