Well, the Caloi Aluminium Series were a breed of bikes that ranged from low middle to top end rides.
From bottom to top:
Andes Express
Andes Sport 10
Andes Expert
Andes Pro 20
Andes Pro 10
Andes Elite
Andes Comp LX
Andes Comp XT
Andes Team
The low middle bikes had Cr-Mo forks, and the middle top bikes came with RS Quadra or Mag.
The Top End ones had italian Olria or Gippiemme dropouts.
I guess your's is really a 1993 model, that was the year the company started a series of marketing actions that culminated in the World Championship victory with Lance Armstrong (in a re-badged Merckx/Litespeed). Right after that Caloi started exporting frames and complete bikes to the american and european markets, so it's quite possible your bike was made in that era!
Caloi was BITD the greatest brazilian bike manufacturer, and one of the country's oldest company: it was founded in 1898. In the last ten or so years things changed and they focused their efforts in crappy low-middle bikes! Sad!
Sorry 'bout the poor english!
Cheers