Vintage Portuguese Carrack Filigree Brooch Pin

This appears to be a souvenir pin, with PORTUGAL embossed on the hull of the ship, which we believe is a carrack. The cross of the Order of Christ is on the sails, a symbol of Portuguese maritime exploration. The base of the brooch is enameled with blue waves.
 
A carrack was a large, multi-masted sailing ship developed in the 15th century, and used by the Portuguese for ocean exploration, trade, and warfare. It’s design enabled long-distance, transoceanic voyages during the Age of Discovery with stability, cargo capacity, and a versatile sailing rig. It is credited with revolutionizing exploration in the 15th and 16th century. Christopher Columbus's flagship, the Santa María, was a carrack. Vasco da Gama also used carracks, including the São Gabriel, on his expedition to find a sea route to India. By the early 17th century, the carrack was replaced by the more advanced galleon. 
 
We believe this piece is crafted from brass or another gold tone metal, not silver. It tested negative for silver on a home acid test. It is quite tarnished but otherwise in good condition.
 
H 1 5/8” x L 1 1/4”
0.25 oz (7g)
 
Disclaimer: We have tried to make sure colors shown in photos are representative of the real colors of each item. We have tried to identify all imperfections in descriptions, but we may have missed some. If you are unhappy with your purchase, let us know.