 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 