The text of the Commentariolum Petitionis is not found in the Codex Mediceus, the best source for M. Cicero's Epistulae ad Familiares (Letters to his Friends).
Tyrell-Purser[6] show that at least one other hapax occurs in Quintus, and that some phrases questioned by Eussner have been found in the works of Cicero and Plautus.
He suggests that Q. Gallius may have been tried twice, or may have entered into counsel with Cicero as early as 66 BC, though the trial did not take place for a couple years.
He is joined by Nisbet[9] (who argues against authenticity) in suggesting that the proscription of Antonius may have had a far more quotidian meaning, such as the selling of property after bankruptcy, than Henderson seems to be reading into it.
Richardson[10] finally notes that the First Catilinarian Conspiracy is not mentioned until In Toga Candida, and as such takes its omission as proof of authenticity.