 Complete the following phrase:  Coins of this gens bear no cognomen. One curious example, issued by Tiberius Veturius Gracchus, depicts the head of a helmeted man on the obverse, and on the reverse, two men with staves and swords, on either side of a kneeling man holding a pig. The coin seems to commemorate a treaty, but the precise occasion is unknown. Michael Crawford suggests that the coin depicts an oath, adding that it might be a reference to the treaty made by Titus Veturius Calvinus with the Samnites at the Caudine Forks, as an example of Roman integrity. He also links the scene depicted to the treaty of 137 negotiated by Tiberius Sempronius Gracchus, the moneyers cousin, during the 