Here it is:

it has been found in Populonia, close to Livorno, Tuscany, together with some 470 lead glans and two other trees raising the total to some 500 glans.
They all have been found inside the sector "le Logge", an ancient villa.
Excavators say these glans have been produced there during the civil war of the 1st century b.C. and never used, because the war was lost, the surroundings felt under control of the Romans, and Populonia almost abandoned in the following years.
The Logge villa:


cfr. "Un gruppo di ghiande missili dal saggio III", M. Coccoluto