I could not find anything by searching those inscriptions.
However, I did find this reference to the initials:
"SPQR are the initials of a Latin phrase Senatus Populusque Romanus. It means "The Roman Senate and People" or "The Senate and People of Rome". It refers to the government of the ancient Roman Republic."
maybe that will get you somewhere.
Edited by oriole
02/23/2020 7:15 pm