In what kind of finds are you interested?
If you mean weapons, there aren’t a lot of archaeological finds of the Iron Age in Portugal. As most of this items are found in necropolis, it is supposed that this fact is related with the funeral rituals of the area, as well as happens in Gallaecia.
Acording to Strabo, the typical Lusitanian warrior was a skirmisher armed with a small circular shield called caetra, a dagger and a lot of javelins. In the Caesar’s comentaries of the Ilerda’s Battle the lusitanian mercenaries were “caetrati” and, in general, all the clasical texts agrees in this point.
The pre-roman Lusitania was in modern Portugal between the Duero and Tajo rivers. Between the 4th and 3th centuries B.C., the most common sword of this area seems to be the atrophied antennae of “Alcacer do Sal” type (Fernando Quesada’s type IV). There are some examples of falcatas, all of them in the south of the Tajo, but the falcata seems to be a weapon more typical from the southwest of the Iberian Peninsula.
In the occidental part of the northen meseta, in the territory of the
vettoni, there are a great deal os necropolis with
weapons (La Osera, Las Cogotas, etc.). So maybe we can use it as a reference for the lusitani.
In the south of
Gallaecia there are a lot of scultures of warriors that could be a good reference...