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
In the first instance, however, the outbreak of the insurrection, and the terrorism which the commission of high treason exercised, produced at least a semblance of unity and vigour. Party feuds were silent; able officers of all shades--democrats like Gaius Marius, aristocrats like Lucius Sulla, friends of Drusus like Publius Sulpicius Rafus--placed themselves at the disposal of the government.
The largesses of corn were, apparently about this time, materially abridged by decree of the people with a view to husband the financial resources of the state for the war; which was the more necessary, as, owing to the threatening attitude of king Mithradates, the province of Asia might at any moment fall into the hand of the enemy and thus one of the chief sources of the Roman revenue be dried up. The courts, with the exception of the commission of high treason, in accordance with a decree of the senate temporarily suspended their action; all business stood still, and nothing was attended to but the levying of soldiers and the manufacture of arms.
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Reference address : https://www.ellopos.net/elpenor/rome/4-07-sulpician-revolution.asp?pg=21