Juvela
I did not know that the lower end (to my eye) pressed steel dropouts on Challenge are also Agrati.
Only the Cordon Bleu is advertised in '63 CB catalog as having Agrati ends (presumably as higher end) and ad shows a pic of a rear Agrati dropout that is the forged model I am acquainted with. From what I have seen that model dropout usually does have Agrati stamped on it.
Thanks
Doug