4. To have in addition to the foregoing qualifications any one of the following:
To have practiced in Cuba, during ten years at least, the profession of lawyer; or have discharged for the same[{228}] length of time judicial functions, or have taught law for the same number of years in an official establishment.
The following persons are also eligible for the positions of Chief Justice or Associate Justices of the Supreme Court, even if not having the qualifications set forth in clauses 1, 2, and 3 of this article:
(a) Those who have served in the judiciary of the time determined by law in a position of equal or immediately inferior category.
(b) Those who, previous to the promulgation of this constitution, served as justices of the supreme court of the island of Cuba.
The time of service in the judiciary shall be computed as time of practice of law for the purpose of qualifying the lawyers to be appointed justices of the supreme court.
Art. 83. The Supreme Court shall have the following powers, in addition to those already vested or hereafter to be vested in it:
1. To take cognizance of cases on a writ of error.
2. To decide conflicts of jurisdiction between courts immediately inferior to it, or not having a common superior.
3. To take cognizance of the cases to which the State on the one side and the provinces or municipalities on the other, are parties.