Speculatores

[M. Caecilius]

Eckhel mentions the coin type with the Cohors Speculatorum under Marcus Antonius, pp.53-55; the inscription more specifically on p.54 (right-hand column). He quotes Muratorius, which I could backtrack to Lodovico Antonio Muratori's Novus thesaurus veterum inscriptionum Volume II. DCCCLV.3 (under Classis/Fleet inscriptions). In Agro Bojano ex Donio (Bovianum?)

D.M. / M. Staberius M.F. Quir. Lacer / 7 Coh VI Speculat Class Misen / V Fecit Sibi et Staberiae Veri/dianae Matri [//////] et L. Staber/rio Procillo filio dulcissimo / vix Ann XII M. VII. D. IIII Hor II.

My translation: To the Spirits of the Deceased. Marcus Staberius Lacer(?), son of Marcus, of the Quirina voting tribe, Centurion of the 6th Cohort of Speculatores at the Fleet of Misenum put this up for himself while alive and his mother Staberia Verdiana [erasure] and Lucius Staberius Procillus, his sweetest son (who) lived 12 years, 7 months, 4 days and 2 hours.

Alternatively, it might be that he was centurion of the 6th Cohort (Praetorians, as the Urban Cohorts were numbered consecutively to the Praterians) and at a different time, speculator of the Misenum Fleet. A Cohors VI Speculatorum would require at the least six full cohorts of spies, which is perhaps a bit exaggerated, considering we can't put more than 20 of these people in a two-legion province...