I've also been following this thread.
Note the request went out from the court in 1951. The certificate of arrival number is written on the manifest.... next to the immigrants name..... at least on this manifest through the early 1940s.
So maybe there was a different procedure after that.... or that the manifests were filmed in the 1940s and any subsequent notations on those sheets obviously aren't going to be seen on these pages. I looked through the manifest looking for the certificate number (not any names) and saw the apparent cutoff for the sheet notations.
You might want to send an email to Marian Smith, the Historian at the US Immigration and Naturalization Service who is an expert on these types of records, and if you do and she replies, repeat the information here.