Yes! No

I thought for a second that the notch codes for Kodak Ortho-X corresponded to the sheets that I have, alas I had just misread the table. I have some Ortho-X film that has just a single rectangular notch, not the three notches that are usually listed. I think it must be from an early 1938 batch before they decided on what the notch code should be. The film develops best in paper developer with surprisingly little fog, given how old it is.

Best regards,