Section 39(iv) in The Bihar Finance Service Rules, 1953
(iv)to the [Service] [Substituted by S.O. 1201, dated 17.8.1981, for the words, 'either branch of Service'.] by promotion from different gazetted services and non-gazetted ranks, their seniority inter se shall be determined by the order of preference assigned to them by the Public Service Commission, except that when more than one officer is promoted from the same service or cadre, their seniority shall be determined by the order of their position inter se in the service or cadre from which they were promoted:
