I mistakenly posted this originally in a wrong forum. I apologize and if a moderator wants to take it down I understand. I'm new to this website and I am still learning.

Can anyone tell which year the above-mentioned lens was manufactured? It has Nr 609995 stamped on the front of the lens. My best guess is 1924 according to http://camera-wiki.org/wiki/Carl_Zeiss_serial_numbers. Of course if you scroll down to Carl Zeiss Oberkochen it indicates a possible match for the years 1951-1953.

If it was made in 1924 or 1951-1953 is it of high quality?