This iron horse bit comes from Brazil
It has a medium height port.
The turning cheeks have pierced decoration and discs.
The bit has its original curb chain and slobber chain.
This bit was probably made in Brazil in the 19th century, although I have seen similar examples catalogued as European & 18th Century.
Dimensions : Mouthpiece 4¼" (10.8cm),
Cheek length 7¼" (18.2cm)
Weight : 425g (13½oz)
Ref : bit634