1.2. The selection of the petitioner along with two C other candidates as substituted candidates in place of the three ineligible candidates, was under fortuitous circumstances since the original selection had already been made and in keeping with the marks obtained by him and his second preference, the petitioner had been D appointed as Sales Tax Officer, Class-I and he, in fact, joined in the said post on 22nd April, 1992. The petitioner's contention that since both K and he had joined the post of DSP on 15th September, 1993, their seniority should have been reckoned from the same day was rightly E rejected both by the tribunal and the High Court, having regard to the fact that while K had been included in the first select list and his appointment was also deferred on account of verification of his Caste Certificate, the appointment of the petitioner who had already been F appointed and was functioning as Sales Tax Officer, Class-I, in the post of DSP, was accidental in view of the ineligibility of three candidates who had been included in the initial list of selected candidates. His claim for seniority could, therefore, be reckoned only from the date G of his joining his duties as DSP. [Para 17] [476-D-G]