Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Re-establishment of Constitutional Order
One thing still remained--perhaps the most difficult of all: to bring the exceptional state of things into accordance with the paths prescribed by the new or old laws. It was facilitated by the circumstance, that Sulla never lost sight of this as his ultimate aim. Although the Valerian law gave him absolute power and gave to each of his ordinances the force of law, he had nevertheless availed himself of this extraordinary prerogative only in the case of measures, which were of transient importance, and to take part in which would simply have uselessly compromised the senate and burgesses, especially in the case of the proscriptions.
Sulla Resigns the Regency
Ordinarily he had himself observed those regulations, which he prescribed for the future. That the people were consulted, we read in the law as to the quaestors which is still in part extant; and the same is attested of other laws, e. g. the sumptuary law and those regarding the confiscation of domains. In like manner the senate was previously consulted in the more important administrative acts, such as in the sending forth and recall of the African army and in the conferring of the charters of towns.
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Reference address : https://www.ellopos.net/elpenor/rome/4-10-sullan-constitution.asp?pg=58