Hi victorlsfm and welcome to the forum.
Cool bike.
I am Swedish, but have never seen a road bike from Kroon. There has been a connection with Brazil for large Swedish companies for many years. And Monark had(has?) a factory in Brazil. And Kroon was bought by the Monark Crescent joint company, MCB.
If you want to have more information just google the Swedsih word for bicycle = cykel and kroon > "kroon cykel".
Here is a cool Kroon utility bike with full suspension from 1943:
Kroon cykel