This is the second Carnaval LP found & bought on the flea market at Kalenić Pijaca in Belgrade (for about 20 cents) by Aktivista (nom de guerre of one of my best friends), who runs lots of blogs, one of which is Zaboravljeni zvuci (forgotten sounds).
My guess is that a tourist from Belgrade visited Rio in 1990, bought several LPs and after ruining his gramophone needle and trashing his gramophone, dumped his LP collection near or in the street trash container where it was found by an authorized dealer from the flea market…
It can be downloaded from Aktivista‘s blog:
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ZABORAVLJENI ZVUCI ZVUČE FANTASTIČNO…
PARALLEL REALITIES STUDIO 
stupendo incredibile