Are there any differences between a judge appointed before and after the commencement of the Constitution (Seventh Amendment) Act, 1956?
Yes, there are differences between a judge appointed before and after the commencement of the Constitution (Seventh Amendment) Act, 1956. The main difference lies in the additional amount received as special pay for judges holding office as Chief Justice or other Judge at the time of the act's commencement, as mentioned in paragraph (3).

Judges who were appointed before the act's commencement and held office as the Chief Justice of a State specified in Part B of the First Schedule and then became the Chief Justice of a State specified in the said Schedule after the act's commencement are entitled to receive an amount equivalent to the difference between the salary they were drawing immediately before the commencement and the salary specified in sub-paragraph (1) of this paragraph, as special pay.

In contrast, judges who were appointed after the commencement of the Constitution (Seventh Amendment) Act, 1956, and held office as a Chief Justice or other Judge are not mentioned to receive any additional amount as special pay in the given context.