In the past 50 years I have handled a lot of cameras, run film though a good many old cameras, and have a general knowledge of a great many collectible cameras.  Rarely do I get involved in research, tearing down or other in depth studies that would make me an expert.  I have seen some statements about the Kodak 35RF that I do believe need correcting though.  Names and resources will not be mentioned because I don't think that is fair to them, nor am I wanting to put down individuals I know in general are far more expert than myself about most cameras they discuss.   (1) in a discussion of Kodak Anastigmat Special and Kodak Anastar lenses I found this statement on an internet site, "....the main difference is that the Anastar lens is coated." A Kodak information sheet (copyright 1946, identified as 8-46-CH on the back) states that there were Lumenized (name of Kodak's coating) Kodak Anastigmat Special lenses.  To the left is a coated Anastigmat Special, vintage 1947 based on using the code "Camerosity" (ES = 47).  Speaking of vintages of Kodak 35RF, I have seen articles suggesting two different time ranges: 1940-48 and 1940-51.  I favor the later being the correct one since I have a lens with an ET (1949) serial number and saw one listed on eBay with an RY (1950) lens serial number.  One more item on the lens.  I read at one time, and I can't find the resource right now, that the Kodak Anastigmat Special was the same formula as the Ektar, but that due to the front element focusing Kodak did not feel it came up to Ektar standards thoughout the focus range.