Traditional "Maciejówka" caps have West European origins, but are rooted deeply into Polish history. These elegant caps with round crowns and short bills, usualy decorated with band or twine are very similiar to classic breton caps and jewish fiddler caps.
Here you will also find a classic breton cap made with black corduroy (and few other color versions), inspired by hats of John Lennon.
Jewish fiddler caps, which you may also find here (remember Tevia?) have a brimm shorter and more pointing down than Maciejowka or breton cap and a little smaller crown.