Rolleicord Analogue Printing/ Friedrich Axinon 9cm f4.5

[Nicky]

Yes, I still print my Rolleicord negatives the old-fashioned way (and still enjoy the process). Meanwhile, I recently purchased an old Friedrich Munchen Axinon f4.5 9cm enlarging lens (SN 420876).

After some research, I discovered that Christof Friedrich registered the Axinon name in 1938; so my lens was manufactured after that date. Meanwhile, does anyone have access to a serial number list which will tell me what year my lens was made?