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
Exceptions from these general rules were created by special state-treaties, which secured certain rights to the members of foreign communities within the Roman state. In particular, the perpetual league between Rome and Latium declared all contracts between Romans and Latins to be valid in law, and at the same time instituted in their case an accelerated civil process before sworn "recoverers" (-reciperatores-).
As, contrary to Roman usage, which in other instances committed the decision to a single judge, these always sat in plural number and that number uneven, they are probably to be conceived as a court for the cognizance of commercial dealings, composed of arbiters from both nations and an umpire. They sat in judgment at the place where the contract was entered into, and were obliged to have the process terminated at latest in ten days.
The forms, under which the dealings between Romans and Latins were conducted, were of course the general forms which regulated the mutual dealings of patricians and plebeians; for the -mancipatio- and the -nexum- were originally not at all formal acts, but the significant expression of legal ideas which held a sway at least as extensive as the range of the Latin language.
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Reference address : https://www.ellopos.net/elpenor/rome/1-11-law-justice.asp?pg=18