LA CRONOLOGIA DI P.VAT.GR. 11R (P.MARM.)

P.Marm. is an administrative text, that its editors define as “land registers" with fiscal purpose, and date at the 31st or, at most, at 32nd reign year of Commodus (190/1 or 191/2 A.D.). This conjecture does not reconcile itself to the frequently quoted quinquennium, 16th-20th years, wich the same editors relate to the Commodus reign (175/6-179/180 A.D.) and consider as the chronological basis of the fiscal evaluation of real estates. As it is very difficult to believe that a reference was made to an evaluation of 15 years before, it must be admitted that the quinquennium in question is to be related to the reign of Septimius Severus and his sons, that's to say to the years 207/208-211/2 A.D. Such a dating is confirmed by the mention of the prefect Claudius Iulianus, in office in the years between 203(?) and 205 A.D., as well as by the incipit of a diastroma, present at the verso, between the coll. 18 and 19, where a reference is made to the 23d year of Caracalla's reign (215 A.D.).