The Palmaria is an Italian self-propelled gun developed from the SP70 program. OTO Melara engineers began working on the SPG in 1977. They installed a 155 mm howitzer in a rotating turret on the chassis of the export OF-40 tank. The first Palmaria prototype was presented in 1981, and mass production began the following year. The SPG was intended for the export market, and Libya and Nigeria became its primary customers, receiving a total of 187 vehicles. Additionally, Argentina purchased 25 Palmaria turrets, which were installed on TAM chassis. Production ended in 1990.

The Palmaria was used by government forces against rebels during the Libyan Civil War, where it proved to be an effective weapon. However, after NATO countries began their military intervention, the SPG's vulnerability to air attacks became apparent. Many Palmarias were destroyed by precision-guided bombs. The remaining vehicles were later used in local clashes between rival Libyan factions.

The Palmaria was introduced in Update 2.57 "Heavy Cavalry". It is a large vehicle with weak armor and mediocre survivability. Nevertheless, the SPG is fairly mobile, and its powerful HE shells can destroy enemies with a single well-placed shot. Additionally, the mechanized ammo rack provides a respectable reload rate. The proximity fuze shell is also effective for engaging aircraft.