The newspaper cutting is from January 22, 1971. I found the case of Union of India against order of Justice Sabyasachi Mukherjee on appointment of P K Basu as IG. Link is given below. You can read in that appeal that it is against the order given by Mukherjee on January 21, 1971.
https://www.casemine.com/judgement/in/56b48f46607dba348fff7598
People who read this also find this interesting