I bought this today from Marketplace. All I know of it is that it was fabricated in Brazil between the 90's and 2010. Original seatpost has a sticker with the Spin Heads brand, last owner claims its original. By a short research it matches another equal frameset.
Other specs:
Steering set: 1" threaded
Fork: Akela (aftermarket)
BB: 35mm right thread
Seatpost: 28,6∅ (88% sure)
by ooc_username