No it's in Paraguay, the Paraguayan Infanteria de Marina have still 2 3" Vickers, I think this is one of them.
Received 25 shells 76/50 mm from the Brazilian navy in 2002.
A total of 14 Vickers guns were acquired, different types, 10 in 1907 incl. mod.1887 and/or 1898 and 4 in Chile during 1922 on pedestals.
During the Chaco War 3 were used on ships, the others as field and coastal guns.